1. From the Department of Dermatology and Skin Science, University of British Columbia, Vancouver, BC; Division of Dermatology, Department of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Fahad National Guard Hospital, King Abdulaziz Medical City, Riyadh, Saudi Arabia; Department of Pathology and Laboratory Medicine, University of British Columbia and Vancouver General Hospital, Vancouver, BC; and Division of Dermatology, Department of Medicine, St. Paul's Hospital, Providence...