Institution: | 1. Department of Anthropology, Johns Hopkins University, 3400 N. Charles St., 404 Macauley Hall, Baltimore, MD 21218, United States;2. Africa Centre for Health and Population Studies, University of KwaZulu-Natal, Somkhele, South Africa;3. UCL Institute of Child Health, University College London, London, UK;4. UCL Centre for Sexual Health and HIV Research, University College London, London, UK |