1. Western University; London ON Canada
2. Department of Dermatology; University of California; San Francisco School of Medicine; San Francisco CA U.S.A.
3. University of Colorado; Aurora CO U.S.A.
4. Department of Dermatology; Leiden University Medical Centre; Leiden the Netherlands
5. School of Healthcare; University of Leeds; Leeds U.K.
6. Denver Veterans Affairs Medical Center; Denver CO U.S.A.
7. Centre of Evidence Based Dermatology; University of Nottingham; Nottingham U.K.