| Affiliation: | 1. Department of Epidemiology, University of North Carolina Gillings School of Global Public Health, Chapel Hill, North Carolina;2. Division of Cancer Prevention and Control, Centers for Disease Control and Prevention, Atlanta, Georgia;3. Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina;4. Social and Scientific Systems, Inc, Durham, North Carolina;5. Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina |
