1. 1Medical School, University of Minnesota, Minneapolis, Minnesota.
2. 2Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, Minnesota.
3. 3Department of Obstetrics, Gynecology and Women's Health, Division of Gynecologic Oncology, University of Minnesota, Minneapolis, Minnesota.
4. 4Department of Medicine, Division of Hematology and Oncology, University of Minnesota, Minneapolis, Minnesota.
5. 5Division of Health Policy and Management, School of Public Health, University of Minnesota, Minneapolis, Minnesota.
6. 6Department of Dermatology, University of Minnesota, Minneapolis, Minnesota.
7. 7Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota.
8. 8Department of Dermatology, University of California, San Francisco, San Francisco, California.
9. 9Dermatology Service, San Francisco VA Health Care System, San Francisco, California.