[1] Univ British Columbia, Vancouver Gen Hosp, Dept Dermatol & Skin Sci, Vancouver, BC, Canada
[2] King Abdul Aziz Med City, King Fahad Natl Guard Hosp, King Saud Bin Abdulaziz Univ Hlth Sci, Div Dermatol,Dept Med, Riyadh, Saudi Arabia
[3] Vancouver Gen Hosp, Skin Care Ctr, Vancouver, BC, Canada