Hannah Wichmann

Maria Teresa Landi 4 collaborations

None None 4 collaborations

H-Erich Wichmann 3 collaborations

John K Field 3 collaborations

Loic Le Marchand 3 collaborations

Lambertus A Kiemeney 3 collaborations

Henri Wichmann 3 collaborations

Dirk Vordermark 3 collaborations

Stefan Karrasch 3 collaborations

Heinz-Erich Wichmann 3 collaborations

Karl-Heinz Jöckel 3 collaborations

Wolfgang Ahrens 3 collaborations

Annette Peters 3 collaborations

Juncheng Dai 2 collaborations

Demetrius Albanes 2 collaborations

Stephen Lam 2 collaborations

Adonina Tardon 2 collaborations

Chu Chen 2 collaborations

Stig E Bojesen 2 collaborations

Mattias Johansson 2 collaborations

Angela Risch 2 collaborations

Paul Brennan 2 collaborations

Olle Melander 2 collaborations

Geoffrey Liu 2 collaborations

Rayjean J Hung 2 collaborations

Kjell Grankvist 2 collaborations

Mikael Johansson 2 collaborations

Neil Caporaso 2 collaborations

Philip Lazarus 2 collaborations

Matthew B Schabath 2 collaborations

Melinda C Aldrich 2 collaborations

Victoria L Stevens 2 collaborations

David C Christiani 2 collaborations

Zhibin Hu 2 collaborations

Christopher I Amos 2 collaborations

Hongbing Shen 2 collaborations

Matthias Kappler 2 collaborations

Antje Güttler 2 collaborations

Matthias Bache 2 collaborations

Neil E Caporaso 2 collaborations

Michael P A Davies 2 collaborations

John McLaughlin 2 collaborations

Hans Kromhout 2 collaborations

Roel Vermeulen 2 collaborations

Thomas Brüning 2 collaborations

Thomas Behrens 2 collaborations

Jack Siemiatycki 2 collaborations

Pascal Guenel 2 collaborations

Danièle Luce 2 collaborations

Dario Consonni 2 collaborations

Per Gustavsson 2 collaborations

Franco Merletti 2 collaborations

Lorenzo Richiardi 2 collaborations

Hermann Pohlabeln 2 collaborations

Paolo Boffetta 2 collaborations

David Zaridze 2 collaborations

Jolanta Lissowska 2 collaborations

Beata Świątkowska 2 collaborations

Vladimir Bencko 2 collaborations

Lenka Foretova 2 collaborations

Vladimir Janout 2 collaborations

Eleonora Fabianova 2 collaborations

Dana Mates 2 collaborations

Joachim Schüz 2 collaborations

Kurt Straif 2 collaborations

Ann Olsson 2 collaborations

Marcus Dörr 2 collaborations

Christa Meisinger 2 collaborations

Henry Völzke 2 collaborations

Zhe Wang 2 collaborations

Christian Gieger 2 collaborations

Anne U Jackson 2 collaborations

Marika A Kaakinen 2 collaborations

Vasiliki Lagou 2 collaborations

Heather M Stringham 2 collaborations

Zhanna Balkhiyarova 2 collaborations

Robert A Scott 2 collaborations

Barbara Thorand 2 collaborations

Michael Boehnke 2 collaborations

Claudia Langenberg 2 collaborations

Nicholas G Martin 2 collaborations

Tune H Pers 2 collaborations

Inga Prokopenko 2 collaborations

Cornelia M van Duijn 2 collaborations

Nicholas J Wareham 2 collaborations

Ruth J F Loos 2 collaborations

Marcel den Hoed 2 collaborations

Na Qin 1 collaboration

Yuancheng Li 1 collaboration

Cheng Wang 1 collaboration

Meng Zhu 1 collaboration

Tongtong Hong 1 collaboration

Gary Goodman 1 collaboration

Heike Bickeboller 1 collaboration

Gadi Rennert 1 collaboration

Susanne Arnold 1 collaboration

Sanjay Shete 1 collaboration

Hans Brunnstrom 1 collaboration

Angeline Andrew 1 collaboration

Shan Zienolddiny 1 collaboration

Penella Woll 1 collaboration

Guangfu Jin 1 collaboration

Hongxia Ma 1 collaboration

Claus Weinholdt 1 collaboration

Johanna Kotrba 1 collaboration

David H Ardell 1 collaboration

Alexander W Eckert 1 collaboration

Ivo Grosse 1 collaboration

Katharina Theuerkorn 1 collaboration

Anne Riemann 1 collaboration

Jacqueline Kessler 1 collaboration

Oliver Thews 1 collaboration

Ying Zhu 1 collaboration

Yongyue Wei 1 collaboration

Ruyang Zhang 1 collaboration

Xuesi Dong 1 collaboration

Sipeng Shen 1 collaboration

Yang Zhao 1 collaboration

Jianling Bai 1 collaboration

Bin Zhu 1 collaboration

Stephen J Chanock 1 collaboration

Fangyi Gu 1 collaboration

Ming-Sound Tsao 1 collaboration

Frances A Shepherd 1 collaboration

Ana Fernández-Somoano 1 collaboration

Guillermo Fernandez-Tardon 1 collaboration

Matthew J Barnett 1 collaboration

Jennifer Doherty 1 collaboration

James D McKay 1 collaboration

Robert Carreras-Torres 1 collaboration

Thomas Muley 1 collaboration

Heunz-Erich Wichmann 1 collaboration

Heike Bickeboeller 1 collaboration

Albert Rosenberger 1 collaboration

Gad Rennert 1 collaboration

Walid Saliba 1 collaboration

Susanne M Arnold 1 collaboration

Michael W Marcus 1 collaboration

Xifeng Wu 1 collaboration

Yuanqing Ye 1 collaboration

Lynne R Wilkens 1 collaboration

Jonas Manjer 1 collaboration

Hans Brunnström 1 collaboration

Yonathan Brhane 1 collaboration

Linda Kachuri 1 collaboration

Angeline S Andrew 1 collaboration

Eric J Duell 1 collaboration

Erik Hfm van der Heijden 1 collaboration

Aage Haugen 1 collaboration

Shanbeh Zienolddiny 1 collaboration

Vidar Skaug 1 collaboration

Penella J Woll 1 collaboration

Angela Cox 1 collaboration

Fiona Taylor 1 collaboration

Dawn M Teare 1 collaboration

Richard S Houlston 1 collaboration

Younghun Han 1 collaboration

Dakai Zhu 1 collaboration

Gary E Goodman 1 collaboration

Feng Chen 1 collaboration

Anja Hein 1 collaboration

Marina Petrenko 1 collaboration

Jacqueline Keßler 1 collaboration

Daniel Emmerich 1 collaboration

Reinhard Paschke 1 collaboration

Neela Guha 1 collaboration

Liacine Bouaoun 1 collaboration

Susan Peters 1 collaboration

Véronique Luzon 1 collaboration

Mengting Xu 1 collaboration

Benjamin Kendzia 1 collaboration

Nils Plato 1 collaboration

Dario Mirabelli 1 collaboration

Lap Ah Tse 1 collaboration

Ignatius Tak-Sun Yu 1 collaboration

Adonina Tardón 1 collaboration

Andrea 't Mannetje 1 collaboration

Neil Pearce 1 collaboration

Paul A Demers 1 collaboration

Tamás Pándics 1 collaboration

Francesco Forastiere 1 collaboration

Bas Bueno-de-Mesquita 1 collaboration

Jan Hovanec 1 collaboration

David I Conway 1 collaboration

Simonato Lorenzo 1 collaboration

Cristina Fortes 1 collaboration

Marie-Élise Parent 1 collaboration

John R McLaughlin 1 collaboration

Paul Demers 1 collaboration

Guillermo Fernández-Tardón 1 collaboration

Tamas Pándics 1 collaboration

Swaantje Casjens 1 collaboration

Beate Pesch 1 collaboration

Christian Freeman 1 collaboration

Kaitlyn K Stanhope 1 collaboration

Denise J Jamieson 1 collaboration

Sheree L Boulet 1 collaboration

Karin Halina Greiser 1 collaboration

Susanne Göttlicher 1 collaboration

Maren Albrecht 1 collaboration

Fabian Bamberg 1 collaboration

Till Bärnighausen 1 collaboration

Heiko Becher 1 collaboration

Klaus Berger 1 collaboration

Achim Beule 1 collaboration

Heiner Boeing 1 collaboration

Barbara Bohn 1 collaboration

Kerstin Bohnert 1 collaboration

Bettina Braun 1 collaboration

Hermann Brenner 1 collaboration

Robin Bülow 1 collaboration

Stefanie Castell 1 collaboration

Antje Damms-Machado 1 collaboration

Nina Ebert 1 collaboration

Margit Ecker 1 collaboration

Carina Emmel 1 collaboration

Beate Fischer 1 collaboration

Claus-Werner Franzke 1 collaboration

Sylvia Gastell 1 collaboration

Guido Giani 1 collaboration

Matthias Günther 1 collaboration

Kathrin Günther 1 collaboration

Klaus-Peter Günther 1 collaboration

Johannes Haerting 1 collaboration

Ulrike Haug 1 collaboration

Iris M Heid 1 collaboration

Margit Heier 1 collaboration

Diana Heinemeyer 1 collaboration

Thomas Hendel 1 collaboration

Florian Herbolsheimer 1 collaboration

Jochen Hirsch 1 collaboration

Wolfgang Hoffmann 1 collaboration

Bernd Holleczek 1 collaboration

Heike Hölling 1 collaboration

Andreas Hörlein 1 collaboration

Rudolf Kaaks 1 collaboration

André Karch 1 collaboration

Nadja Kartschmit 1 collaboration

Hans-Ulrich Kauczor 1 collaboration

Thomas Keil 1 collaboration

Yvonne Kemmling 1 collaboration

Bianca Klee 1 collaboration

Birgit Klüppelholz 1 collaboration

Alexander Kluttig 1 collaboration

Lisa Kofink 1 collaboration

Anna Köttgen 1 collaboration

Daniel Kraft 1 collaboration

Gérard Krause 1 collaboration

Lisa Kretz 1 collaboration

Lilian Krist 1 collaboration

Jan Kühnisch 1 collaboration

Oliver Kuß 1 collaboration

Nicole Legath 1 collaboration

Anna-Therese Lehnich 1 collaboration

Michael Leitzmann 1 collaboration

Wolfgang Lieb 1 collaboration

Jakob Linseisen 1 collaboration

Markus Loeffler 1 collaboration

Anke Macdonald 1 collaboration

Klaus H Maier-Hein 1 collaboration

Nina Mangold 1 collaboration

Claudia Meinke-Franze 1 collaboration

Juliane Melzer 1 collaboration

Björn Mergarten 1 collaboration

Karin B Michels 1 collaboration

Rafael Mikolajczyk 1 collaboration

Susanne Moebus 1 collaboration

Ulrich Mueller 1 collaboration

Matthias Nauck 1 collaboration

Thoralf Niendorf 1 collaboration

Konstantin Nikolaou 1 collaboration

Nadia Obi 1 collaboration

Stefan Ostrzinski 1 collaboration

Leo Panreck 1 collaboration

Iris Pigeot 1 collaboration

Tobias Pischon 1 collaboration

Irene Pschibul-Thamm 1 collaboration

Wolfgang Rathmann 1 collaboration

Achim Reineke 1 collaboration

Stefanie Roloff 1 collaboration

Dan Rujescu 1 collaboration

Stefan Rupf 1 collaboration

Oliver Sander 1 collaboration

Tamara Schikowski 1 collaboration

Sabine Schipf 1 collaboration

Peter Schirmacher 1 collaboration

Christopher L Schlett 1 collaboration

Börge Schmidt 1 collaboration

Georg Schmidt 1 collaboration

Martin Schmidt 1 collaboration

Gina Schöne 1 collaboration

Holger Schulz 1 collaboration

Matthias B Schulze 1 collaboration

Alexandra Schweig 1 collaboration

Anja M Sedlmeier 1 collaboration

Sonja Selder 1 collaboration

Julia Six-Merker 1 collaboration

Ramona Sowade 1 collaboration

Andreas Stang 1 collaboration

Oliver Stegle 1 collaboration

Karen Steindorf 1 collaboration

Gunthard Stübs 1 collaboration

Enno Swart 1 collaboration

Henning Teismann 1 collaboration

Inke Thiele 1 collaboration

Sigrid Thierry 1 collaboration

Marius Ueffing 1 collaboration

Sabina Waniek 1 collaboration

Andrea Weber 1 collaboration

Nicole Werner 1 collaboration

Stefan N Willich 1 collaboration

Kerstin Wirkner 1 collaboration

Kathrin Wolf 1 collaboration

Robert Wolff 1 collaboration

Hajo Zeeb 1 collaboration

Melanie Zinkhan 1 collaboration

Johannes Zschocke 1 collaboration

Andrew Emmerich 1 collaboration

Nicolas J Pillon 1 collaboration

Tim Moore 1 collaboration

Daiane Hemerich 1 collaboration

Marilyn C Cornelis 1 collaboration

Eugenia Mazzaferro 1 collaboration

Siacia Broos 1 collaboration

Tarunveer S Ahluwalia 1 collaboration

Traci M Bartz 1 collaboration

Amy R Bentley 1 collaboration

Lawrence F Bielak 1 collaboration

Mike Chong 1 collaboration

Audrey Y Chu 1 collaboration

Diane Berry 1 collaboration

Rajkumar Dorajoo 1 collaboration

Nicole D Dueker 1 collaboration

Elisa Kasbohm 1 collaboration

Bjarke Feenstra 1 collaboration

Mary F Feitosa 1 collaboration

Mariaelisa Graff 1 collaboration

Leanne M Hall 1 collaboration

Toomas Haller 1 collaboration

Fernando P Hartwig 1 collaboration

David A Hillis 1 collaboration

Ville Huikari 1 collaboration

Nancy Heard-Costa 1 collaboration

Christina Holzapfel 1 collaboration

Åsa Johansson 1 collaboration

Anja Moltke Jørgensen 1 collaboration

Robert Karlsson 1 collaboration

Kathleen F Kerr 1 collaboration

Boram Kim 1 collaboration

Chantal M Koolhaas 1 collaboration

Zoltan Kutalik 1 collaboration

Penelope A Lind 1 collaboration

Mattias Lorentzon 1 collaboration

Leo-Pekka Lyytikäinen 1 collaboration

Massimo Mangino 1 collaboration

Christoph Metzendorf 1 collaboration

Kristine R Monroe 1 collaboration

Alexander Pacolet 1 collaboration

Louis Pérusse 1 collaboration

Rene Pool 1 collaboration

Rebecca C Richmond 1 collaboration

Natalia V Rivera 1 collaboration

Sebastien Robiou-du-Pont 1 collaboration

Katharina E Schraut 1 collaboration

Christina-Alexandra Schulz 1 collaboration

Toshiko Tanaka 1 collaboration

Alexander Teumer 1 collaboration

Constance Turman 1 collaboration

Peter J van der Most 1 collaboration

Mathias Vanmunster 1 collaboration

Frank J A van Rooij 1 collaboration

Jana V van Vliet-Ostaptchouk 1 collaboration

Xiaoshuai Zhang 1 collaboration

Jing-Hua Zhao 1 collaboration

Wei Zhao 1 collaboration

Marie N Balslev-Harder 1 collaboration

Sebastian E Baumeister 1 collaboration

John Beilby 1 collaboration

John Blangero 1 collaboration

Dorret I Boomsma 1 collaboration

Soren Brage 1 collaboration

Peter S Braund 1 collaboration

Jennifer A Brody 1 collaboration

Marcel Bruinenberg 1 collaboration

Ulf Ekelund 1 collaboration

Ching-Ti Liu 1 collaboration

John W Cole 1 collaboration

Francis S Collins 1 collaboration

L Adrienne Cupples 1 collaboration

Tõnu Esko 1 collaboration

Stefan Enroth 1 collaboration

Jessica D Faul 1 collaboration

Lindsay Fernandez-Rhodes 1 collaboration

Alison E Fohner 1 collaboration

Oscar H Franco 1 collaboration

Tessel E Galesloot 1 collaboration

Scott D Gordon 1 collaboration

Niels Grarup 1 collaboration

Catharina A Hartman 1 collaboration

Gerardo Heiss 1 collaboration

Jennie Hui 1 collaboration

Thomas Illig 1 collaboration

Russell Jago 1 collaboration

Alan James 1 collaboration

Peter K Joshi 1 collaboration

Taeyeong Jung 1 collaboration

Mika Kähönen 1 collaboration

Tuomas O Kilpeläinen 1 collaboration

Woon-Puay Koh 1 collaboration

Ivana Kolcic 1 collaboration

Peter P Kraft 1 collaboration

Johanna Kuusisto 1 collaboration

Lenore J Launer 1 collaboration

Aihua Li 1 collaboration

Allan Linneberg 1 collaboration

Jian'an Luan 1 collaboration

Pedro Marques Vidal 1 collaboration

Sarah E Medland 1 collaboration

Yuri Milaneschi 1 collaboration

Arden Moscati 1 collaboration

Bill Musk 1 collaboration

Christopher P Nelson 1 collaboration

Ilja M Nolte 1 collaboration

Nancy L Pedersen 1 collaboration

Patricia A Peyser 1 collaboration

Christine Power 1 collaboration

Olli T Raitakari 1 collaboration

Mägi Reedik 1 collaboration

Alex P Reiner 1 collaboration

Paul M Ridker 1 collaboration

Igor Rudan 1 collaboration

Kathy Ryan 1 collaboration

Mark A Sarzynski 1 collaboration

Laura J Scott 1 collaboration

Stephen Sidney 1 collaboration

Kristin Siggeirsdottir 1 collaboration

Albert V Smith 1 collaboration

Jennifer A Smith 1 collaboration

Emily Sonestedt 1 collaboration

Marin Strøm 1 collaboration

E Shyong Tai 1 collaboration

Koon K Teo 1 collaboration

Anke Tönjes 1 collaboration

Angelo Tremblay 1 collaboration

Andre G Uitterlinden 1 collaboration

Jagadish Vangipurapu 1 collaboration

Natasja van Schoor 1 collaboration

Uwe Völker 1 collaboration

Gonneke Willemsen 1 collaboration

Kayleen Williams 1 collaboration

Quenna Wong 1 collaboration

Huichun Xu 1 collaboration

Kristin L Young 1 collaboration

Jian Min Yuan 1 collaboration

M Carola Zillikens 1 collaboration

Alan B Zonderman 1 collaboration

Adam Ameur 1 collaboration

Stefania Bandinelli 1 collaboration

Joshua C Bis 1 collaboration

Claude Bouchard 1 collaboration

Daniel I Chasman 1 collaboration

George Davey Smith 1 collaboration

Eco J C de Geus 1 collaboration

Louise Deldicque 1 collaboration

Michele K Evans 1 collaboration

Luigi Ferrucci 1 collaboration

Myriam Fornage 1 collaboration

Caroline Fox 1 collaboration

Theodore Garland 1 collaboration

Vilmundur Gudnason 1 collaboration

Ulf Gyllensten 1 collaboration

Torben Hansen 1 collaboration

Caroline Hayward 1 collaboration

Bernardo L Horta 1 collaboration

Elina Hyppönen 1 collaboration

Marjo-Riitta Jarvelin 1 collaboration

W Craig Johnson 1 collaboration

Sharon L R Kardia 1 collaboration

Markku Laakso 1 collaboration

Terho Lehtimäki 1 collaboration

Patrik K E Magnusson 1 collaboration

Mads Melbye 1 collaboration

Andres Metspalu 1 collaboration

David Meyre 1 collaboration

Kari E North 1 collaboration

Claes Ohlsson 1 collaboration

Albertine J Oldehinkel 1 collaboration

Marju Orho-Melander 1 collaboration

Guillaume Pare 1 collaboration

Taesung Park 1 collaboration

Oluf Pedersen 1 collaboration

Brenda W J H Penninx 1 collaboration

Ozren Polasek 1 collaboration

Charles N Rotimi 1 collaboration

Nilesh J Samani 1 collaboration

Xueling Sim 1 collaboration

Harold Snieder 1 collaboration

Thorkild I A Sørensen 1 collaboration

Tim D Spector 1 collaboration

Nicholas J Timpson 1 collaboration

Rob M van Dam 1 collaboration

Nathalie van der Velde 1 collaboration

Peter Vollenweider 1 collaboration

Trudy Voortman 1 collaboration

Gérard Waeber 1 collaboration

David R Weir 1 collaboration

James F Wilson 1 collaboration

Andrea L Hevener 1 collaboration

Anna Krook 1 collaboration

Juleen R Zierath 1 collaboration

Martine A I Thomis 1 collaboration

Longda Jiang 1 collaboration

Anna Ulrich 1 collaboration

Liudmila Zudina 1 collaboration

Karla Sofia Gutiérrez González 1 collaboration

Alessia Faggian 1 collaboration

Jared G Maina 1 collaboration

Shiqian Chen 1 collaboration

Petar V Todorov 1 collaboration

Sodbo Sharapov 1 collaboration

Alessia David 1 collaboration

Letizia Marullo 1 collaboration

Reedik Mägi 1 collaboration

Roxana-Maria Rujan 1 collaboration

Emma Ahlqvist 1 collaboration

Gudmar Thorleifsson 1 collaboration

Ηe Gao 1 collaboration

Εvangelos Εvangelou 1 collaboration

Beben Benyamin 1 collaboration

Aaron Isaacs 1 collaboration

Jing Hua Zhao 1 collaboration

Sara M Willems 1 collaboration

Toby Johnson 1 collaboration

Harald Grallert 1 collaboration

Martina Müller-Nurasyid 1 collaboration

Rona J Strawbridge 1 collaboration

Anuj Goel 1 collaboration

Denis Rybin 1 collaboration

Eva Albrecht 1 collaboration

Ivan R Corrêa 1 collaboration

Eric Farber-Eger 1 collaboration

Valgerdur Steinthorsdottir 1 collaboration

André G Uitterlinden 1 collaboration

Patricia B Munroe 1 collaboration

Morris J Brown 1 collaboration

Julian Schmidberger 1 collaboration

Oddgeir Holmen 1 collaboration

Kristian Hveem 1 collaboration

Tom Wilsgaard 1 collaboration

Karen L Mohlke 1 collaboration

Aleksey Shmeliov 1 collaboration

Wolfgang Kratzer 1 collaboration

Mark Haenle 1 collaboration

Wolfgang Koenig 1 collaboration

Bernhard O Boehm 1 collaboration

Tricia M Tan 1 collaboration

Alejandra Tomas 1 collaboration

Victoria Salem 1 collaboration

Inês Barroso 1 collaboration

Jaakko Tuomilehto 1 collaboration

Jose C Florez 1 collaboration

Anders Hamsten 1 collaboration

Hugh Watkins 1 collaboration

Inger Njølstad 1 collaboration

Mark J Caulfield 1 collaboration

Kay-Tee Khaw 1 collaboration

Albert Hofman 1 collaboration

John B Whitfield 1 collaboration

Grant Montgomery 1 collaboration

Chiara Scapoli 1 collaboration

Ioanna Tzoulaki 1 collaboration

Paul Elliott 1 collaboration

Unnur Thorsteinsdottir 1 collaboration

Kari Stefansson 1 collaboration

Evan L Brittain 1 collaboration

Mark I McCarthy 1 collaboration

Philippe Froguel 1 collaboration

Patrick M Sexton 1 collaboration

Denise Wootten 1 collaboration

Leif Groop 1 collaboration

Josée Dupuis 1 collaboration

James B Meigs 1 collaboration

Giuseppe Deganutti 1 collaboration

Ayse Demirkan 1 collaboration

Christopher A Reynolds 1 collaboration

Yurii S Aulchenko 1 collaboration

Ben Jones 1 collaboration

Affiliations

Publications (11)

Comprehensive functional annotation of susceptibility variants identifies genetic heterogeneity between lung adenocarcinoma and squamous cell carcinoma.

Prediction of regulatory targets of alternative isoforms of the epidermal growth factor receptor in a glioblastoma cell line.

Cellular and radiobiological effects of carbonic anhydrase IX in human breast cancer cells.

Elevated Platelet Count Appears to Be Causally Associated with Increased Risk of Lung Cancer: A Mendelian Randomization Analysis.

Evaluation of the Betulinic Acid-Cisplatin conjugate APC and its precursor DE9B for the treatment of human malignant glioma.

Lung cancer risk in painters: results from the SYNERGY pooled case-control study consortium.

Application of two job indices for general occupational demands in a pooled analysis of case-control studies on lung cancer.

Neighborhood deprivation and severe maternal morbidity in a medicaid-Insured population in Georgia.

Framework and baseline examination of the German National Cohort (NAKO).

Genome-wide association analyses of physical activity and sedentary behavior provide insights into underlying mechanisms and roles in disease prevention.

GWAS of random glucose in 476,326 individuals provide insights into diabetes pathophysiology, complications and treatment stratification.

Réseau de co-auteurs