[1] Ctr Addict & Mental Hth, Hlth Syst Res & Consulting Unit, Toronto, ON M5T 1R8, Canada
[2] Univ Toronto, Dept Psychiat, Toronto, ON M5S 1A8, Canada
[3] Univ Toronto, Dept Hlth Policy Management & Evaluat, Toronto, ON M5S 1A8, Canada
[4] St Michaels Hosp, Ctr Res Inner City Hlth, Toronto, ON M5B 1W8, Canada
[5] Univ Toronto, Dept Family & Community Med, Toronto, ON M5S 1A1, Canada