1. Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Desmond Tutu TB Centre, Stellenbosch University, Cape Town, South Africa;
2. Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom;
3. Private Consultant;
4. Zambia AIDS Related Tuberculosis Project, University of Zambia, Lusaka, Zambia;
5. Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, United Kingdom;
6. Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom; and
7. Yale School of Public Health, New Haven, CT.