[1] Dartmouth College,Center for the Evaluative Clinical Sciences, Dartmouth Medical School
[2] National Institutes of Health,Division of Cancer Epidemiology and Genetics, Department of Health and Human Services, National Cancer Institute
[3] Institute for Clinical Evaluative Sciences,Section of Dermatology, Department of Medicine, Dartmouth Hitchcock Medical Center, and the Norris Cotton Cancer Center
[4] Dartmouth Medical School,Section of Biostatistics and Epidemiology, Department of Community and Family Medicine, the Norris Cotton Cancer Center, and the Center for Environmental Health Sciences, Dartmouth Medical School
[5] Dartmouth College,undefined