1. Department of Dermatology, University of North Carolina, Chapel Hill
2. Department of Medicine, University of Virginia, Charlottesville
3. Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida
4. Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York
5. Department of Internal Medicine, University of New Mexico Cancer Center, University of New Mexico, Albuquerque
6. Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
7. Department of Epidemiology, University of California, Irvine
8. USC Norris Comprehensive Cancer Center, University of Southern California, Los Angeles
9. Cancer Control Research, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
10. Piedmont Cancer Registry, Centre for Epidemiology and Prevention in Oncology in Piedmont, Turin, Italy
11. Piedmont Cancer Registry, Centre for Epidemiology and Prevention in Oncology in Piedmont, Turin, Italy11Politecnico di Torino, Turin, Italy12Universitá degli Studi di Torino, Turin, Italy
12. George Institute for Global Health, Nuffield Department of Obstetrics and Gynecology, University of Oxford, England
13. Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill15Department of Surgery, University of North Carolina, Chapel Hill
14. Department of Dermatology, University of North Carolina, Chapel Hill14Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill