1. Department of Dermatology; Weill Cornell Medical Center and New York-Presbyterian Hospital; New York NY 10065 USA
2. Dermatology Service; Department of Medicine, Memorial Sloan Kettering Cancer Center; New York NY 10022 USA
3. Department of Dermatology; Tufts Medical Center; Boston MA 02111 USA
4. Department of Dermatology, Brigham and Women's Hospital; Boston MA 02115 USA
5. Division of Dermatology, Department of Medicine; University of Massachusetts Medical School; Worcester MA 01605 USA
6. Sidney Kimmel Center for Prostate and Urologic Cancers, Memorial Sloan-Kettering Cancer Center; New York NY 10065 USA