1. Médecins Sans Frontières, Khayelitsha, South Africa
2. Médecins Sans Frontières, Khayelitsha, South Africa, Division of Public Health Medicine, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
3. Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA, USA
4. City of Cape Town, Department of Health, Cape Town, South Africa