1. Center for Health Equity Research, University of North Carolina at Chapel Hill
2. Department of Social Medicine, University of North Carolina at Chapel Hill
3. Injury Prevention Center, University of North Carolina at Chapel Hill
4. Division of Infectious Diseases, University of North Carolina at Chapel Hill
5. Department of Behavioral Sciences and Health Education, Emory University, Atlanta, Georgia
6. North Carolina Department of Public Safety, Raleigh
7. North Carolina Department of Public Health, Raleigh
8. Department of Epidemiology, University of North Carolina at Chapel Hill