From the Departments of Neurology (I.L.) and Biostatistics (H.-C.K., I.B.A., G.R.C., T.M., G.M.), University of Alabama at Birmingham; Department of Neurology (H.J.K.), George Washington University School of Medicine and Health Sciences, Washington, DC; Department of Neurology (J.S.), Greater Manchester Neuroscience Center, Salford, Greater Manchester, UK; Institute of Pathology (P.S.), University Medical Center Göttingen; Division of Neurology (J.O.), University of British Columbia, Vancouver, Canada; Department of Neurology (G.C.), University of Chile, Santiago; Division of Neurology (J.M.H.), Department of Medicine, University of Cape Town, South Africa; Department of Neurology (A.E.), Catholic University, Rome, Italy; Department of Neurology (W.N.), Johannes Gutenberg University, Mainz, Germany; Department of Neurology (E.C.), University of Rochester Medical Center, NY; Department of Neurosciences (G.A.), Mental Health and Sensory Organs, Sapienza University of Rome, Italy; Division of Neurology (R.W.), Ramathibodi Hospital, Mahidol University, Bangkok, Thailand; Department of Neurology (J.O.K.), Royal Melbourne Hospital, Victoria, Australia; Department of Neurology (S.R.B.), University of Southern California, Los Angeles; Department of Neurology (C.H.C.), McGill University, Montreal, Canada; Department of Neurology (A.C.B.), Medical College of Wisconsin, Milwaukee; Department of Neurology (A.A.A.), Harvard Medical School, Boston, MA; Nerve and Muscle Center of Texas (A.I.S.), Houston; Department of Neurology (B.K.), Case Western Reserve University, Cleveland, OH; Walton Centre for Neurology and Neurosurgery (B.R.F.L.), Liverpool; Nuffield Department of Clinical Neurosciences (C.B., A.V.), Oxford University, UK; Unit of Neurology (E.D.-T.), University of Brasilia, Brazil; Department of Neurology (H.Y.), Kanazawa University, Japan; Department of Neurology (M.W.-C.), Federal University, Rio de Janeiro, Brazil; Department of Neurology (M.T.P.), University of Florida, Jacksonville; Department of Neurology (M.H.R.), Augusta University, GA; Department of Neurology (A.K.-P.), Medical University of Warsaw, Poland; Department of Neurology (R.M.P.), Indiana School of Medicine, Indianapolis; Department of Neurology (C.E.J.), University of Texas Health Science Center, San Antonio; Department of Neurology (J.J.G.V.), Leiden University Medical Center, the Netherlands; Department of Neurology (J.M.M.), Duke University Medical Center, Durham, NC; Department of Neurology (J.T.K.), Ohio State University Wexner Medical Center, Columbus; Department of Neurology (L.C.W.), Universidade Federal do Parana, Curitiba, Brazil; Department of Neurology (M.B.), University of Miami, FL; Department of Neurology (R.J.B.), University of Kansas Medical Center, Kansas City; Department of Neurological Sciences (R.T.), University of Vermont College of Medicine, Burlington; Department of Neurology (T.M.), University of California Irvine Medical Center, Orange; Division of Extramural Research (R.C.), NIH, National Institute of Neurological Disorders and Stroke, Bethesda, MD; Section of General Thoracic Surgery (J.R.S.), Columbia University Medical Center, New York; and Department of Neurology (G.I.W.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY.