1. Department of Dermatology, University of North Carolina at Chapel Hill, Chapel Hill2Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, Chapel Hill3Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill
2. Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill
3. Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill4Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill
4. Department of Dermatology, University of North Carolina at Chapel Hill, Chapel Hill3Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill