1. Perelman School of Medicine, University of Pennsylvania, Philadelphia
2. University of Iowa Carver College of Medicine, Iowa City
3. University of Massachusetts Medical School, Worcester
4. Department of Dermatology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
5. Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
6. Department of Dermatology, University of Iowa Carver College of Medicine, Iowa City