University of Toronto, University of California, Irvine, University of Toronto - Sunnybrook Health Sciences Centre, University of Toronto - Sunnybrook Health Sciences Centre, University of Toronto - Sunnybrook Health Sciences Centre, University of Toronto - Sunnybrook Health Sciences Centre, University of Ottawa - Ottawa Hospital Research Institute, McMaster University, University of Toronto - St. Michael’s Hospital, University of Western Ontario - London Health Sciences Centre, University of Toronto - Toronto Western Hospital, Bay Regional Health Sciences Centre, Trillium Health Partners, University of Toronto - St. Michael’s Hospital, University of Toronto - Sunnybrook Health Sciences Centre, University of Toronto - Sunnybrook Health Sciences Centre, Queen's University - Institute for Clinical Evaluative Sciences, University of Toronto - Sunnybrook Health Sciences Centre, Rotman Research Institute (RPI), University of Toronto - Sunnybrook Health Sciences Centre, Institute for Clinical Evaluative Sciences (ICES), University of Toronto and University of Toronto - Department of Medicine (Neurology)