Decompressive Craniectomy versus Craniotomy for Acute Subdural Hematoma.


Journal

The New England journal of medicine
ISSN: 1533-4406
Titre abrégé: N Engl J Med
Pays: United States
ID NLM: 0255562

Informations de publication

Date de publication:
15 06 2023
Historique:
medline: 16 6 2023
pubmed: 24 4 2023
entrez: 24 04 2023
Statut: ppublish

Résumé

Traumatic acute subdural hematomas frequently warrant surgical evacuation by means of a craniotomy (bone flap replaced) or decompressive craniectomy (bone flap not replaced). Craniectomy may prevent intracranial hypertension, but whether it is associated with better outcomes is unclear. We conducted a trial in which patients undergoing surgery for traumatic acute subdural hematoma were randomly assigned to undergo craniotomy or decompressive craniectomy. An inclusion criterion was a bone flap with an anteroposterior diameter of 11 cm or more. The primary outcome was the rating on the Extended Glasgow Outcome Scale (GOSE) (an 8-point scale, ranging from death to "upper good recovery" [no injury-related problems]) at 12 months. Secondary outcomes included the GOSE rating at 6 months and quality of life as assessed by the EuroQol Group 5-Dimension 5-Level questionnaire (EQ-5D-5L). A total of 228 patients were assigned to the craniotomy group and 222 to the decompressive craniectomy group. The median diameter of the bone flap was 13 cm (interquartile range, 12 to 14) in both groups. The common odds ratio for the differences across GOSE ratings at 12 months was 0.85 (95% confidence interval, 0.60 to 1.18; P = 0.32). Results were similar at 6 months. At 12 months, death had occurred in 30.2% of the patients in the craniotomy group and in 32.2% of those in the craniectomy group; a vegetative state occurred in 2.3% and 2.8%, respectively, and a lower or upper good recovery occurred in 25.6% and 19.9%. EQ-5D-5L scores were similar in the two groups at 12 months. Additional cranial surgery within 2 weeks after randomization was performed in 14.6% of the craniotomy group and in 6.9% of the craniectomy group. Wound complications occurred in 3.9% of the craniotomy group and in 12.2% of the craniectomy group. Among patients with traumatic acute subdural hematoma who underwent craniotomy or decompressive craniectomy, disability and quality-of-life outcomes were similar with the two approaches. Additional surgery was performed in a higher proportion of the craniotomy group, but more wound complications occurred in the craniectomy group. (Funded by the National Institute for Health and Care Research; RESCUE-ASDH ISRCTN Registry number, ISRCTN87370545.).

Sections du résumé

BACKGROUND
Traumatic acute subdural hematomas frequently warrant surgical evacuation by means of a craniotomy (bone flap replaced) or decompressive craniectomy (bone flap not replaced). Craniectomy may prevent intracranial hypertension, but whether it is associated with better outcomes is unclear.
METHODS
We conducted a trial in which patients undergoing surgery for traumatic acute subdural hematoma were randomly assigned to undergo craniotomy or decompressive craniectomy. An inclusion criterion was a bone flap with an anteroposterior diameter of 11 cm or more. The primary outcome was the rating on the Extended Glasgow Outcome Scale (GOSE) (an 8-point scale, ranging from death to "upper good recovery" [no injury-related problems]) at 12 months. Secondary outcomes included the GOSE rating at 6 months and quality of life as assessed by the EuroQol Group 5-Dimension 5-Level questionnaire (EQ-5D-5L).
RESULTS
A total of 228 patients were assigned to the craniotomy group and 222 to the decompressive craniectomy group. The median diameter of the bone flap was 13 cm (interquartile range, 12 to 14) in both groups. The common odds ratio for the differences across GOSE ratings at 12 months was 0.85 (95% confidence interval, 0.60 to 1.18; P = 0.32). Results were similar at 6 months. At 12 months, death had occurred in 30.2% of the patients in the craniotomy group and in 32.2% of those in the craniectomy group; a vegetative state occurred in 2.3% and 2.8%, respectively, and a lower or upper good recovery occurred in 25.6% and 19.9%. EQ-5D-5L scores were similar in the two groups at 12 months. Additional cranial surgery within 2 weeks after randomization was performed in 14.6% of the craniotomy group and in 6.9% of the craniectomy group. Wound complications occurred in 3.9% of the craniotomy group and in 12.2% of the craniectomy group.
CONCLUSIONS
Among patients with traumatic acute subdural hematoma who underwent craniotomy or decompressive craniectomy, disability and quality-of-life outcomes were similar with the two approaches. Additional surgery was performed in a higher proportion of the craniotomy group, but more wound complications occurred in the craniectomy group. (Funded by the National Institute for Health and Care Research; RESCUE-ASDH ISRCTN Registry number, ISRCTN87370545.).

Identifiants

pubmed: 37092792
doi: 10.1056/NEJMoa2214172
doi:

Banques de données

ISRCTN
['ISRCTN87370545']

Types de publication

Randomized Controlled Trial Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

2219-2229

Subventions

Organisme : Health Technology Assessment Programme
ID : Award ID: 12/35/57. ISRCTN: 87370545

Investigateurs

Peter J Kirkpatrick (PJ)
Hadie Adams (H)
Nicola Owen (N)
Kirsty Grieve (K)
Alexis Joannides (A)
Ellie Edlmann (E)
Karen Caldwell (K)
Silvia Tarantino (S)
Francesca Hill (F)
Liz Corteen (L)
Janet Corn (J)
Matthew G Stovell (MG)
Mathew Guilfoyle (M)
Mohammad Naushahi (M)
Richard Mair (R)
Ibrahim Jalloh (I)
Mark Kotter (M)
Gary Barton (G)
Sarah Pyne (S)
David Turner (D)
Kamila Walker (K)
Tamara Tajsic (T)
Sara Venturini (S)
Selma Tülü (S)
Chris Uff (C)
Shumaila Hasan (S)
Chipo Chitsenega (C)
Geetha Boyapati (G)
Muhammad Bhatti (M)
Malik Zaben (M)
Belinda Gunning (B)
Natalia Ermalai (N)
Dmitri Shastin (D)
Mutwakil Abdulla (M)
Joseph Merola Liudmila (J)
Stuart Smith (S)
Laurence Glanz (L)
Ashwin Kumaria (A)
Lani Patterson (L)
Antonio Belli (A)
Colin Bergin (C)
Maximina Ventura (M)
Emma Toman (E)
Giles Critchley (G)
Laura Ortiz-Ruiz de Gordoa (L)
Prasanna Epaliyanage (P)
Husam Georges (H)
Peter Whitfield (P)
Sam Jeffrey (S)
Charlotte Eglinton (C)
Natasha Wilmhurst (N)
Manjunath Prasad (M)
Shahid Khan (S)
Philip Kane (P)
Emanuel Cirstea (E)
Catherine McMahon (C)
Geraint Sunderland (G)
John Kitchen (J)
Rushid Zakaria (R)
Simon Thomson (S)
Soumya Mukherjee (S)
Ian Anderson (I)
Linetty Makawa (L)
Mary Kambafwile (M)
Marios C Papadopoulos (MC)
Mathew Joseph Gallagher (MJ)
Siobhan Kearney (S)
Sarah Trippier (S)
Mark Wilson (M)
Hani Marcus (H)
Rhys Thomas (R)
Sonia Fernandez Lopez (S)
Louise Young (L)
Andrea D'Mello (A)
Jo-Anna Conyngham (JA)
Diederik Bulters (D)
Ardalan Zolnourian (A)
Patrick Holton (P)
Miriam Taylor (M)
Charlaine Reeve (C)
Jonathan Pollock (J)
Ciaran Hill (C)
Elisa Visentin (E)
Laura Parker (L)
Kismet Hossain-Ibrahim (K)
Paul Johnston (P)
Vasileios Arzoglou (V)
Emma Clarkson (E)
Arif Zafar (A)
Efosa Ukponmwan (E)
Christos Tolias (C)
Joseph Frantzias (J)
Anastasios Giamouriadis (A)
Yahia Al-Tamimi (Y)
Adam Wahba (A)
Patrick Easton (P)
Rose Clegg (R)
Grace Cole (G)
Damian Holliman (D)
Louise Finlay (L)
Daniel Holsgrove (D)
Alex Leggate (A)
Jane Perez (J)
Louise Harrison (L)
Gareth Roberts (G)
Terrie-Louise Cromie (TL)
Marianne Hare (M)
Sonia Raj (S)
Tim Lawrence (T)
Ruichong Ma (R)
Javier Magan Ventura (J)
Neil Davidson (N)
Richard Nelson (R)
Ruth Womer (R)
Beverley Fulkner (B)
Shabin Joshi (S)
Geraldine Ward (G)
Ioannis Fouyas (I)
Julie Woodfield (J)
Himanshu Shekhar (H)
Kareen Damley (K)
Emma Fleming (E)
Roddy O'Kane (R)
Michael Canty (M)
Indira Devi Bhagavatula (ID)
Dhananjaya Ishwar Bhat (DI)
Dhaval Prem Shukla (DP)
Subhas K Konar (SK)
Nagesh Shanbhag (N)
Vaishali Nl Valluru (VN)
Manoj Kumar Tewari (MK)
Manjul Tripathi (M)
Deepak Gupta (D)
Ashish Bindra (A)
Kaveri Sharma (K)
Mathew Joseph (M)
Nicole Keong (N)
Christine Lock (C)
Chen Min Wei (CM)
Julian Han (J)
Janell Kwok (J)
Nicolas Kon Kam King (NKK)
Martina Stippler (M)
Emmalin Nelton (E)
Louis Anthony Whitworth (LA)
Sonja Stutzman (S)
Christopher Madden (C)
Caryn Harper (C)
Tracey Moore (T)
Vin Shen Ban (VS)
Alice Salazar (A)
Rocco Armonda (R)
Jason J Chang (JJ)
George B Moses (GB)
Patricia Tanjucto (P)
Jamie Ullman (J)
Orseola Arapi (O)
Betsy Moclair (B)
Nrupen Baxi (N)
Erin Lewis (E)
Melvin Stone (M)
John Adair Prall (JA)
Meghan Baldwin (M)
Jamie Jones (J)
Clare Gallagher (C)
Ish Bains (I)
Kesava Reddy (K)
Paula Carroll (P)
Leodante Da Costa (L)
Nadia Scantlebury (N)
Fahad Alkherayf (F)
Rafael Ochoa-Sanchez (R)
Ioana Moldovan (I)
Sean Christie (S)
Lisa Julien (L)
Kostas Fountas (K)
Thanasis Paschalis (T)
Sandro Krieg (S)
Sebastian Ille (S)
Maria Luisa Gandia Gomez (ML)
Alfonso Legares (A)
Ana Maria Castaño Leon (AM)
András Büki (A)
Gábor Lenzsér (G)
Tariq Khan (T)
Mukhtar Khan (M)
Franco Servadei (F)
Massimo Tomei (M)
Vairavan Narayanan (V)
Ronie Romelean Jayapalan (RR)
Martin Hunn (M)
Panagiota Gkolia (P)
Emily Galea (E)
Paula Kareclas (P)
Sridevi Nagarajan (S)
James Piercy (J)
Peter Kirkpatrick (P)
A David Mendelow (AD)
Andrew King (A)
John D Pickard (JD)
Paul Brennan (P)
Christopher Cowie (C)
Carol Davis-Wilkie (C)
Tapiwa Tungamirai (T)
Kerstin Wolf (K)
Natalia Igosheva (N)
Alicia Gore (A)
Michele Jillings (M)
Christopher Bushell (C)
Anthony Bell (A)
Allison Hirst (A)
Peter McCabe (P)
Simon Shaw (S)
Martin Smith (M)
Joan Grieve (J)
Jonathan Cook (J)

Commentaires et corrections

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Informations de copyright

Copyright © 2023 Massachusetts Medical Society.

Auteurs

Peter J Hutchinson (PJ)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Hadie Adams (H)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Midhun Mohan (M)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Bhagavatula I Devi (BI)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Christopher Uff (C)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Shumaila Hasan (S)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Harry Mee (H)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Mark H Wilson (MH)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Deepak K Gupta (DK)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Diederik Bulters (D)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Ardalan Zolnourian (A)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Catherine J McMahon (CJ)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Matthew G Stovell (MG)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Yahia Z Al-Tamimi (YZ)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Manoj K Tewari (MK)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Manjul Tripathi (M)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Simon Thomson (S)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Edoardo Viaroli (E)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Antonio Belli (A)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Andrew T King (AT)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Adel E Helmy (AE)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Ivan S Timofeev (IS)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Sarah Pyne (S)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Dhaval P Shukla (DP)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Dhananjaya I Bhat (DI)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Andrew R Maas (AR)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Franco Servadei (F)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Geoffrey T Manley (GT)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Garry Barton (G)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Carole Turner (C)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

David K Menon (DK)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Barbara Gregson (B)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

Angelos G Kolias (AG)

From the Division of Neurosurgery, Addenbrooke's Hospital (P.J.H., H.A., M.M., E.V., A.E.H., I.S.T., C.T., A.G.K.), the Department of Clinical Neurosciences (P.J.H., H.A., M.M., H.M., M.G.S., E.V., A.E.H., I.S.T., C.T., A.G.K.), and the Division of Anaesthesia (D.K.M.), University of Cambridge, and the Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust (C.T.), Cambridge, the Neurosurgery Department, Royal London Hospital (C.U., S.H.), and the Department of Neurosurgery, Imperial Neurotrauma Centre, Imperial College Academic Health Sciences Centre, St. Mary's Hospital (M.H.W.), London, Wessex Neurological Centre, University Hospitals Southampton NHS Foundation Trust, Southampton (D.B., A.Z.), the Department of Neurosurgery, Walton Centre NHS Foundation Trust, Liverpool (C.J.M., M.G.S.), the Department of Neurosurgery and the Academic Directorate of Neurosciences, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield (Y.Z.A.-T.), the Department of Neurosurgery, Leeds General Infirmary, Leeds (S.T.), the Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham (A.B.), the Department of Neurosurgery, Manchester Centre for Clinical Neurosciences, Manchester (A.T.K.), Norwich Medical School, University of East Anglia, Norwich (S.P., G.B.), and the Neurosurgical Trials Group, Wolfson Research Centre, Newcastle University, Newcastle upon Tyne (B.G.) - all in the United Kingdom; the Department of Neurosurgery, National Institute of Mental Health and Neurosciences (B.I.D., D.P.S.), and the Department of Neurosurgery, Aster RV Hospital (D.I.B.), Bangalore, the Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi (D.K.G.), and the Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh (M.K.T., M.T.) - all in India; the Department of Neurosurgery, University Hospital Antwerp, Edegem, Belgium (A.R.M.); Humanitas Research Hospital-IRCCS and Humanitas University, Rozzano, Milan (F.S.); and the University of California, San Francisco, San Francisco (G.T.M.).

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