1 Division of Dermatology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada. Electronic address: ferrier@ualberta.ca.
2 Division of Dermatology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada.
3 Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada; Department of Pathology, College of Medicine, King Faisal University, Al Hufuf, Saudi Arabia.
4 Faculty of Medicine, University of Alberta, Edmonton, Alberta, Canada.
5 Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada.
6 Division of Hematology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada.
7 Division of Dermatology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada; Department of Dermatology, Bispebjerg Hospital, Copenhagen, Denmark.