1Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois, USA
2Department of Neurology, Columbia University, New York, New York, USA
3Department of Neuroepidemiology, Carlos III Institute, Madrid, Spain
4Department of Neurology, Innsbruck Medical University, Innsbruck, Austria
5Department of Pharmacology, Faculdade de Medicina de Lisboa, Lisboa, Portugal
6Department of Neurology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
7Biostatistics, Bioinformatics Epidemiology, Medical University of South Carolina, Charleston, South Carolina, USA
8Department of Neurology, Friedrich-Wilhelms-University, Bonn, Germany
9Department of Neurology, Hôpital de la Salpetriere, Paris, France
10Department of Neurology, University of Rochester, Rochester, New York, USA
11Department of Neurology, Baylor College of Medicine, Houston, Texas USA
12Department of Neurology, Sant Pau Hospital, Barcelona, Spain
13Division of Applied and Interventional Research, University of Toronto, Toronto, Canada
14Reta Lila Weston Institute of Neurological Studies, University College, London, England
15Department of Neurology, Wayne State University, Detroit, Michigan, USA
16Department of Neurology and Rehabilitation, University of Illinois, Chicago, Illinois, USA.
17Department of Neurology, Mount Sinai School of Medicine, New York, New York, USA
18Laboratoire de Pharmacologie Médicale et Clinique, Toulouse University, Toulouse, France
19Department of Clinical Neurosciences, University College, London, England
20Division of General Medicine, Columbia University, New York, New York, USA.
21Department of Neurology, Leiden University, Leiden, the Netherlands
22Division of Preventive and Behavioral Medicine, University of Massachusetts, Worcester, Massachusetts, USA.