1. Africa Health Research Institute, KwaZulu-Natal, South Africa
2. Nelson R Mandela School of Medicine, College of Health Sciences, University of KwaZulu-Natal, South Africa
3. Department of Statistics, Department of Biobehavioral Nursing and Health Informatics, Center for Statistics and the Social Sciences, and Center for Studies in Demography and Ecology, University of Washington, Seattle, WA, USA
4. Heidelberg Institute for Public Health, University of Heidelberg, Heidelberg, Germany
5. Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, USA
6. Research Department of Infection and Population Health, University College London, London, UK
7. Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
8. School of Nursing and Public Health, University of KwaZulu-Natal, South Africa