[1] Univ Toronto, Div Dermatol, Toronto, ON, Canada
[2] Univ Toronto, Fac Med, Toronto, ON, Canada
[3] Western Univ, Schulich Sch Med & Dent, Fac Med, London, ON, Canada
[4] McMaster Univ, Fac Med, Hamilton, ON, Canada
[5] Sunnybrook Hlth Sci Ctr, Toronto, ON, Canada
[6] Womens Coll Hosp, Toronto, ON, Canada
[7] Probity Med Res Inc, Waterloo, ON, Canada
[8] Womens Coll Hosp, Div Dermatol, 76 Grenville St,5th Floor, Toronto, ON M5S 1B2, Canada