1. Department of Global Health and Development, Faculty of Public Health and Policy, London School of Hygiene & Tropical Medicine, London, UK; Zambart, School of Medicine, University of Zambia, Lusaka, Zambia
2. Department of Infectious Diseases Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK
3. Zambart, School of Medicine, University of Zambia; Lusaka, Zambia, Department of Infectious Diseases Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK
4. Department of Clinical Research, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK
5. Desmond Tutu TB Centre, Department of Paediatrics and Child Health, University of Stellenbosch, Tygerberg, South Africa
6. Zambart, School of Medicine, University of Zambia, Lusaka, Zambia
7. Zambart, School of Medicine, University of Zambia, Lusaka, Zambia; Department of Clinical Research, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK
8. Department of Social and Environmental Health Research, Faculty of Public Health and Policy, London School of Hygiene & Tropical Medicine, UK