1. From the Departments of Neurology (A.M.S., K.C.J.) and Public Health Sciences (A.M.S., K.C.J.), University of Virginia Health System, Charlottesville; Department of Neurology, Hospital Vall d’Hebron-Barcelona, Barcelona, Spain (C.A.M.); Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA (M.H.S.); and Departments of Clinical Neurosciences (N.K., M.G.) and Radiology (M.G.), University of Calgary, Foothills Medical Centre, Calgary, AB, Canada.