1. Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland.
2. Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
3. Rakai Health Sciences Program, Kalisizo, Uganda.
4. Monogram Biosciences, South San Francisco, California.
5. Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
6. Clinical Monitoring Research Program, SAIC-Frederick, Inc., NCI-Frederick, Frederick, Maryland.
7. Makerere University College of Health Sciences, Kampala, Uganda.
8. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.