1. Dermatology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
2. Department of Dermatology, Stanford University School of Medicine, Stanford, California
3. Department of Pathology and Dermatology, Stanford University School of Medicine, Stanford, California
4. Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
5. Department of Head and Neck Surgery, Stanford University Medical Center, Stanford, California