1. Bureau of Disease Control, South Carolina Department of Health and Environmental Control, Columbia, South Carolina.
2. Division of Infectious Diseases, Department of Internal Medicine, University of South Carolina School Of Medicine, Columbia, South Carolina.
3. Department of Environmental Health Sciences, University of South Carolina Arnold School of Public Health, Columbia, South Carolina.
4. Department of Health Services Policy and Management, University of South Carolina Arnold School of Public Health, Columbia, South Carolina.
5. Bureau of Chronic Diseases, South Carolina Department of Health and Environmental Control, Columbia, South Carolina.