1. Division of Neurology Department of MedicineSunnybrook Health Sciences Centre Toronto Ontario Canada
2. Heart and Stroke Centre for Stroke Recovery Sunnybrook Health Sciences CentreToronto Ontario Canada
3. Ontario Brain InstituteToronto Ontario Canada
4. L.C. Campbell Cognitive Neurology Research Unit Sunnybrook Health Sciences CentreToronto Ontario Canada
5. Clinical Epidemiology Unit Department of Research Design and Biostatistics Sunnybrook Research Institute Toronto Ontario Canada