1. Stanford University School of Medicine , Stanford, CA , USA
2. Department of Economics, Stanford University School of Medicine , Stanford, CA , USA
3. Department of Dermatology, Stanford University School of Medicine , Stanford, CA , USA
4. Division of Dermatology, Department of Medicine, David Geffen School of Medicine at UCLA , Los Angeles, CA , USA
5. Department of Medicine, Division of Oncology, Stanford University School of Medicine , Stanford, CA , USA
6. Division of Medical Oncology, University of Washington , Seattle, WA , USA
7. Clinical Research Division, Fred Hutchinson Cancer Center , Seattle, WA , USA
8. Dermatology Service, Veterans Affairs Palo Alto Health Care System , Palo Alto, CA , USA