1. Department of Dermatology, University of North Carolina at Chapel Hill, Chapel Hill
2. Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, Chapel Hill
3. Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill
4. Davis Library, University of North Carolina at Chapel Hill, Chapel Hill
5. medical student at Penn State College of Medicine, Hershey, Pennsylvania
6. medical student at University of North Carolina at Chapel Hill School of Medicine, Chapel Hill
7. Department of Dermatology, Penn State Hershey Medical Cancer, Hershey, Pennsylvania