[1] Ctr Addict & Mental Hlth, Inst Mental Hlth Policy Res, Toronto, ON, Canada
[2] Univ Toronto, Dalla Lana Sch Publ Hlth, Toronto, ON, Canada
[3] Univ Montreal, Dept Family & Emergency Med, Montreal, PQ, Canada
[4] Univ Montreal, Hosp Res Ctr, Montreal, PQ, Canada
[5] Sunnybrook Hlth Sci Ctr, Schulich Heart Program, Div Cardiol, 2075 Bayview Ave, Toronto, ON M4N 3M5, Canada
[6] Univ Toronto, Dept Med, Toronto, ON, Canada