1. Centre for Addiction and Mental Health, Toronto (Kerman, Kozloff, Stergiopoulos); MAP Centre for Urban Health Solutions, Unity Health Toronto, Toronto (Nisenbaum, Durbin, Wang, Hwang); Dalla Lana School of Public Health (Nisenbaum) and Department of Psychiatry (Durbin, Kozloff, Stergiopoulos) and Division of General Internal Medicine (Hwang), Faculty of Medicine, University of Toronto, Toronto.