1. Program for Clinical Research and Technology, Stanford University, Stanford, California
2. Department of Dermatology, Stanford University School of Medicine, Stanford, California
3. Center for Dermatoepidemiology, Providence Veterans Affairs Medical Center, Providence, Rhode Island
4. Department of Dermatology, Brown University, Providence, Rhode Island
5. Department of Epidemiology, Brown University, Providence, Rhode Island
6. Department of Medicine (Oncology), Stanford University School of Medicine, Stanford, California
7. Department of Pathology, Stanford University School of Medicine, Stanford, California
8. Stanford Cancer Institute, School of Medicine, Stanford, California