1. School of Medicine and Rollins School of Public Health, Emory University, Atlanta, Georgia
2. Aurum Institute, Johannesburg, South Africa
3. Department of Medicine, Division of Infectious Diseases, Perelman School of Medicine, University of Pennsylvania, Philadelphia
4. Nuclear Medicine, CM Johannesburg Academic Hospital, University of the Witwatersrand, Johannesburg, South Africa
5. Advancing Care and Treatment for TB/HIV, a Collaborating Centre of the South African Medical Research Council, Johannesburg, South Africa
6. School of Public Health, University of the Witwatersrand, Johannesburg, South Africa
7. Department of Medicine, University of Massachusetts Medical School, Worcester
8. Department of Biostatistics, Epidemiology, and Informatics, Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia