1. Division of Infectious Diseases Massachusetts General Hospital Boston MA USA
2. Division of General Internal Medicine Massachusetts General Hospital Boston MA USA
3. Medical Practice Evaluation Center Department of Medicine Massachusetts General Hospital Boston MA USA
4. Harvard University Center for AIDS Research (CFAR) Boston MA USA
5. Harvard Medical School Boston MA USA
6. Biostatistics Center Massachusetts General Hospital Boston MA USA
7. McCord Hospital Durban South Africa
8. Department of Academic Affairs, Research and Quality Assurance Corporate Data Warehouse National Health Laboratory Services Johannesburg South Africa
9. Departments of Biostatistics and Epidemiology Boston University School of Public Health Boston MA USA
10. Division of Rheumatology Department of Medicine, and Department of Orthopedic Surgery Brigham and Women's Hospital Boston MA USA