1. Department of Medicine, Division of Biostatistics and Epidemiology, Medical University of South Carolina, Charleston, South Carolina
2. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts
3. RTI International, Research Triangle Park, North Carolina
4. Department of Neuroscience, Medical University of South Carolina, Charleston, South Carolina
5. South Carolina Department of Probation, Parole, and Pardon Services, Columbia, South Carolina