1. Dermatology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York;
2. Department of Dermatology, Weill Cornell Medicine, New York, New York;
3. Department of Dermatology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania;
4. Ronald O. Perelman Department of Dermatology, New York University Langone Medical Center, New York, New York; and
5. Department of Dermatology, University of California San Francisco, San Francisco, California