1. Department of Medicine St. Luke's Hospital Chesterfield Missouri USA
2. Division of Intramural Research National Institute of Allergy and Infectious Diseases National Institutes of Health Bethesda Maryland USA
3. Department of Epidemiology Johns Hopkins Bloomberg School of Public Health Baltimore Maryland USA
4. Division of Infectious Diseases Department of Medicine Johns Hopkins School of Medicine Baltimore Maryland USA
5. Rakai Health Sciences Program Entebbe Uganda
6. Clinical Research Directorate/Clinical Monitoring Research Program Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute Frederick Maryland USA
7. School of Public Health Makerere University College of Health Sciences Kampala Uganda
8. School of Medicine Makerere University College of Health Sciences Kampala Uganda
9. Laboratory of Pathology National Institutes of Health Bethesda Maryland USA