Affiliation: | 1. South Carolina Statewide Cancer Prevention and Control Program, Department of Epidemiology and Biostatistics, University of South Carolina, Columbia, South Carolina;2. Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens, Georgia;3. Department of Social and Preventive Medicine, State University of New York at Buffalo, Buffalo, New York;4. Dorn Department of Veteran's Affairs Medical Center, Columbia, South Carolina |