1. From the Stroke Outcomes Research Unit (G.S.), Stroke Outcomes Research Canada (SORCan), Division of Neurology, Department of Medicine, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada; the Institute for Clinical Evaluative Sciences & Li Ka Shing Knowledge Institute (G.S.), Toronto, Ontario, Canada; the Departments of Medicine and Health Policy, Management and Evaluation (G.S.), University of Toronto, Toronto, Ontario, Canada; and the Neurological Center and Vascular...