From the Department of Neurology (L.S., C.S., N.K., S.E., A.C., S.C., F.I., K.F., Shadi Yaghi), Brown University, Providence, RI; Department of Neurology (E.B.), University of Alabama at Birmingham; Department of Neurology (S.S.O.), University of Colorado School of Medicine, Aurora; Department of Neurology (J.G., J.A.), Washington University, Saint Louis, MO; Departments of Neurology (N.H., M.D.M.), and Psychiatry (N.H.), University of Massachusetts, Worcester; Department of Neurology (A.L.), Weill Cornell Medical Center, New York, NY; Department of Neurology (K.M., J.R.), Montefiore Medical Center, New York, NY; Department of Neurology (R.S., Yee Cheng, A.S.Z., A.H.), Yale University, New Haven, CT; Department of Neurology (Alexis Simpkins, G.L., J.K., D.P.), University of Florida, Gainesville; Department of Neurology (M.R.H., Adrian Scutelnic, R.M., B.S.), Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland; Department of Neurology (A.R., O.K., D.D.), University of Pennsylvania, Philadelphia; Departments of Neurology (S.A.K., L.A.R.) and Neurosurgery (S.A.K.), Medical University of South Carolina, Charleston; Department of Neurology and Rehabilitation Medicine (E.A.M., Pooja Khatri, Y.A., B.C.), University of Cincinnati; Department of Neurology (D.K., H.L.), Vanderbilt University, Nashville, TN; Department of Neurology (T.N.N., Piers Klein, H.J.A.), Boston University School of Medicine, MA; Department of Neurology (J.A.F., L.K., S.A.), New York University, NY; Department of Neurology (V.M.), University of Utah, Salt Lake City; Department of Neurology (T.W., D.W.), Christchurch Hospital, New Zealand; Department of Neurology (A.N., D.A.), Hartford Hospital, CT; Department of Neurology (A.Q., J.M.), University of Kansas, Kansas City; Department of Neurology (M.K., Yao Cheng), Spectrum Health, Michigan State University, Grand Rapids, MI; Department of Neurology (B.M.G., M.W., D.R.), Duke University, Durham, NC; Department of Medicine and Surgery (M.C.V.), University of Perugia, Italy, University of Perugia, Italy; Neurology-Stroke Unit (Maurizio Paciaroni), IRCCS MultiMedica, Milano, Italy; Cooper Neurologic Institute (J.S., S.K., Siyuan Yu), Cooper University, Camden, NJ; Department of Neurology (C.L.G., E.A.), George Washington University, District of Columbia; Department of Neurology (G.M.D.M., T.D.), University Hospital Basel and University of Basel, Switzerland; Department of Interventional and Diagnostic Neuroradiology (A.B., Marios Psychogios), Clinic of Radiology and Nuclear Medicine, University Hospital Basel and University of Basel, Switzerland; Department of Neurology (R.A.-D., T.K.-H., S.P.), University of Chicago, IL; and Department of Neurology (T.H., D.L.), University of California at Los Angeles.