1. Columbia University Vagelos College of Physicians and Surgeons; New York NY USA
2. Department of Dermatology; Cleveland Clinic Foundation; Cleveland OH USA
3. Section of Otolaryngology; Department of Surgery; Dartmouth-Hitchcock Medical Center; Lebanon NH USA
4. Section of Dermatology; Department of Surgery; Dartmouth Hitchcock Medical Center; Lebanon NH USA
5. Department of Dermatology; The Warren Alpert Medical School at Brown University; Providence RI USA
6. Department of Dermatology; Columbia University Irving Medical Center; New York NY USA