1. Melanoma and Immunotherapeutics Service, Memorial Sloan Kettering Cancer Center; New York New York
2. Weill Cornell Medical College; New York New York
3. Department of Epidemiology and Biostatistics; Memorial Sloan Kettering Cancer Center; New York New York
4. Dana-Farber Cancer Institute, Harvard Medical School; Boston Massachusetts
5. Vanderbilt-Ingram Cancer Center, Vanderbilt University; Nashville Tennessee
6. Helen Diller Family Comprehensive Cancer Center, University of California; San Francisco, San Francisco California
7. Georgetown Lombardi Comprehensive Cancer Center; Washington District of Columbia
8. Moffitt Cancer Center; Tampa Florida
9. Massachussetts General Hospital, Harvard Medical School; Boston Massachusetts
10. University of Chicago Comprehensive Cancer Center Chicago; Illinois
11. Abramson Cancer Center, University of Pennsylvania; Philadelphia Pennsylvania
12. Duke University School of Medicine; Durham North Carolina
13. Jonsson Comprehensive Cancer Center, University of California at Los Angeles; Los Angeles California