1. From the Division of Neurology (F.T., M.V.V., A.Y.X.Y.), Department of Medicine, University of Toronto; St. Michael's Research Institute (M.V.V.), St. Michael's Hospital-Unity Health Toronto; Institute of Health Policy, Management and Evaluation (M.V.V., M.K.K., P.C.A., A.Y.X.Y.) and Division of General Internal Medicine (M.K.K., L.L.-S.), Department of Medicine, University of Toronto; Toronto General Research Institute (M.K.K., L.L.-S.), University Health Network; ICES (M.K.K., L.L.-S., P.C.A., J.P...