[1] St Michaels Hosp, Dept Family & Community Med, Toronto, ON M5B 1W8, Canada
[2] Univ Toronto, Leslie Dan Fac Pharm, Toronto, ON, Canada
[3] Ottawa Hosp, Res Inst, Ottawa, ON, Canada
[4] Univ Toronto, Inst Hlth Policy Management & Evaluat, Toronto, ON, Canada
[5] Univ Toronto, Dept Med, Toronto, ON, Canada
[6] Womens Coll Hosp, Womens Coll Res Inst, Toronto, ON M5S 1B2, Canada
[7] Maple Leaf Med Clin, Toronto, ON, Canada