[1] Dr Chih Ho Hong Med Inc, 20-15300 105 Ave, Surrey, BC V3R 6A7, Canada
[2] Prob Med Res, Waterloo, ON, Canada
[3] Univ British Columbia, Dept Dermatol & Skin Sci, Vancouver, BC, Canada
[4] Univ Toronto, Fac Med, Dept Pediat, Toronto, ON, Canada
[5] Hosp Sick Children, Div Paediat Med, Sect Dermatol, Toronto, ON, Canada
[6] Womens Coll Hosp, Div Dermatol, Toronto, ON, Canada
[7] Hosp Sick Children, Dept Paediat, Div Immunol & Allergy, Toronto, ON, Canada
[8] Sunnybrook Hlth Sci Ctr, Div Dermatol, Toronto, ON, Canada
[9] Univ Toronto, Fac Med, Div Dermatol, Toronto, ON, Canada