[1] Univ Western Ontario, Fac Med, London, ON, Canada
[2] Univ Toronto, Div Dermatol, Dept Med, Toronto, ON, Canada
[3] McMaster Univ, Fac Hlth Sci, Hamilton, ON, Canada
[4] Prob Med Res, Waterloo, ON, Canada
[5] Univ Ottawa, Div Dermatol, Ottawa, ON, Canada
[6] Univ Calgary, Div Dermatol, Dept Med, Calgary, AB, Canada
[7] Dermatol Res Inst, Calgary, AB, Canada
[8] Skin Hlth & Wellness Ctr, Calgary, AB, Canada
[9] Prob Med Res, Calgary, AB, Canada
[10] Univ Calgary, Dept Pediat, Sect Community Pediat, Calgary, AB, Canada
[11] Univ Calgary, Dept Pediat, Sect Pediat Rheumatol, Calgary, AB, Canada
[12] Womens Coll Hosp, Womens Coll Res Inst, Toronto, ON, Canada
[13] Sunnybrook Hlth Sci Ctr, Toronto, ON, Canada