1. Centre for Addiction and Mental Health, Toronto (Lam, Abramovich, Zaheer, Kurdyak); Department of Psychiatry (Lam, Abramovich Zaheer, Kurdyak),Dalla Lana School of Public Health (Abramovich), andInstitute of Health Policy, Management and Evaluation (Lam, Victor, Kurdyak), University of Toronto, Toronto;ICES, Toronto (Victor, Kurdyak).