1. From the Division of Neurology (D.D.), University of Ottawa, and the Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; the Calgary Stroke Program (A.M.D.) and the Department of Clinical Neurosciences and Radiology, University of Calgary, Foothills Medical Centre, Calgary, Alberta, Canada; Cardiovascular (J.F.), Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada; the Department of Medicine (M.K.), University of Toronto, Toronto General Hospital, Toronto, Ontario, Canada;...