1. Heart and Stroke Foundation Centre for Stroke Recovery, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
2. Department of Psychiatry, School of Medicine, University of California, San Francisco, CA, USA
3. Department of Neurology, School of Medicine, University of California, San Francisco, CA, USA
4. Epidemiology and Biostatistics, School of Medicine, University of California, San Francisco, CA, USA