1. From the Division of Neurology, Department of Medicine (C.D.K., J.D.W., K.S., P.K., D.S., G.S.) and Applied Health Research Centre, Li Ka Shing Knowledge Institute (R.N.), St. Michael’s Hospital, Toronto, Ontario, Canada; Division of Neurology (C.D.K., D.S., G.S.) and Dalla Lana School of Public Health (R.N.), University of Toronto, Ontario, Canada; and Ryerson University, Toronto, Ontario, Canada (J.B.).