1. Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
2. Zambart, School of Public Health, University of Zambia, Lusaka, Zambia
3. Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, UK
4. Health Systems Research Unit, Health Systems Trust, Cape Town, South Africa
5. Department of Global Health, London School of Hygiene & Tropical Medicine, London, UK