1. Health Economics and HIV and AIDS Research Division, University of KwaZulu-Natal, Durban, South Africa
2. Biostatistics Research Unit, South African Medical Research Council, Durban, South Africa
3. Human Flourishing Program, Harvard University, Cambridge, Massachusetts
4. Epicentre AIDS Risk Management Limited, Cape Town, South Africa
5. Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa
6. National Institute for Communicable Diseases, Johannesburg, South Africa
7. National Priority Programmes, National Health Laboratory Services, Johannesburg, South Africa