1. Centre for Infectious Disease Epidemiology and Research, University of Cape Town, Cape Town, South Africa
2. Department of Paediatrics and Child Health, University of Stellenbosch and Tygerberg Hospital, Tygerberg, South Africa
3. Empilweni Services and Research Unit, Rahima Moosa Mother and Child Hospital, Department of Paediatrics and Child Health, University of the Witwatersrand, Johannesburg, South Africa
4. Paediatric Infectious Diseases Unit, Red Cross War Memorial Children’s Hospital, Cape Town, South Africa
5. Department of Paediatrics and Child Health, University of Cape Town, Cape Town, South Africa
6. Department of Paediatrics and Child Health, University of the Witwatersrand, Chris Hani Baragwanath Academic Hospital, Johannesburg, South Africa
7. The Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa
8. Africa Health Research Institute, Mtubatuba, South Africa
9. Kheth’Impilo AIDS Free Living, Cape Town, South Africa
10. Division of Epidemiology and Biostatistics, Department of Global Health, Stellenbosch University, Stellenbosch, South Africa
11. Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland