1. Perinatal HIV Research Unit (PHRU) Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
2. Health Systems Research Unit, South African Medical Research Council, Bellville South Africa and African Social Sciences Unit of Research and Evaluation (ASSURE) Wits Health Consortium University of the Witwatersrand Johannesburg South Africa
3. Mortimer Market Centre Central North West London NHS Trust London United Kingdom
4. MRC International Statistics and Epidemiology Group London School of Hygiene and Tropical Medicine London United Kingdom
5. Desmond Tutu HIV Centre University of Cape Town Cape Town South Africa
6. Clinical Trials Research Centre University of Zimbabwe Harare Zimbabwe
7. Child and Adolescent Health Unit Faculty of Medicine and Health Sciences University of Zimbabwe Harare Zimbabwe
8. Medical Research Council/Uganda Virus Research Institute and London School of Hygiene & Tropical Medicine Uganda Research Unit Entebbe Uganda
9. Global Health and Development Department London School of Hygiene and Tropical Medicine London United Kingdom
10. Guys and St Thomas’ NHS Trust/King's College London London United Kingdom