1. Department of Medicine/Dermatology Service, Memorial Sloan-Kettering Cancer Center, New York, NY;
2. Department of Medicine, Division of Hematology/Oncology and
3. Department of Dermatology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL;
4. Department of Dermatology, University of Texas, MD Anderson Cancer Center, Houston, TX; and
5. Department of Dermatology, Stanford University, Stanford, CA