1. Department of Dermatology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
2. University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
3. Center for Dermatoepidemiology, VA Medical Center, Providence, Rhode Island
4. Departments of Dermatology and Epidemiology, Brown University, Providence, Rhode Island
5. Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
6. Department of Biostatistics, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania
7. UPMC Community Medicine Inc, Pittsburgh, Pennsylvania
8. University of Pittsburgh School of Medicine, UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania