[1] Univ Toronto, Dept Ophthalmol & Vis Sci, Toronto, ON, Canada
[2] Univ Toronto, Inst Hlth Policy Management & Evaluat, Dalla Lana Sch Publ Hlth, Toronto, ON, Canada
[3] Univ Toronto, Dept Med, Div Dermatol, Toronto, ON, Canada
[4] Womens Coll Hosp, Dept Med & Res & Innovat Inst, Div Dermatol, Toronto, ON, Canada