1. Epidemiology Branch National Institute of Environmental Health Sciences Research Triangle Park North Carolina USA
2. Department of Epidemiology, Fay W. Boozman College of Public Health University of Arkansas for Medical Sciences Little Rock Arkansas USA
3. Cancer Prevention and Control Program University of South Carolina Columbia South Carolina USA
4. Department of Epidemiology and Biostatistics, Arnold School of Public Health University of South Carolina Columbia South Carolina USA
5. Connecting Health Innovations, LLC Columbia South Carolina USA
6. Department of Epidemiology Harvard T.H. Chan School of Public Health Boston Massachusetts USA
7. Department of Population Medicine Harvard Pilgrim Health Care Institute and Harvard Medical School Boston Massachusetts USA
8. Social and Scientific Systems, Inc Durham North Carolina USA
9. Department of Epidemiology University of North Carolina Gillings School of Global Public Health Chapel Hill North Carolina USA