1. Department of Dermatology Park Nicollet Health Services Minneapolis Minnesota USA
2. Department of Dermatology University of Minnesota Minneapolis Minnesota USA
3. Department of Dermatology Minneapolis Veterans Affairs Medical Center Minneapolis Minnesota USA
4. Medical School University of Minnesota Minneapolis Minnesota USA
5. Division of Dermatology, Sunnybrook Health Sciences Centre University of Toronto Toronto Ontario Canada
6. Department of Dermatology Cleveland Clinic Cleveland Ohio USA
7. Department of Dermatology Dartmouth‐Hitchcock Medical Center Lebanon New Hampshire USA
8. Division of Dermatology University of Ottawa Ottawa Ontario Canada
9. Department of Dermatology Duke University Medical Center Durham North Carolina USA
10. Division of Dermatology, CHU de Québec Laval University Québec Québec Canada
11. Department of Dermatology University of California San Francisco San Francisco California USA
12. Department of Dermatology Columbia University Irving Medical School New York New York USA
13. Department of Dermatology The George Washington University School of Medicine and Health Sciences Washington District of Columbia USA
14. Department of Dermatology University of Colorado Boulder Colorado USA
15. Department of Dermatology University of Wisconsin School of Medicine and Public Health Madison Wisconsin USA
16. Division of Dermatology, Montreal General Hospital McGill University Montreal Quebec Canada
17. Division of Dermatology University of Louisville Louisville Kentucky USA
18. Department of Dermatology Keck School of Medicine Los Angeles California USA