Riley Steiner, MPH1, Sheree Schwartz, PhD, MPH2, Vivian Black3, Helen Rees4, Francois Venter5 and Taha Taha6
(1)Emory University, Atlanta, GA, (2)Wits Reproductive Health and HIV Institute, University of the Witswatersrand and Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, (3)Wits Reproductive Health and HIV Institute (WRHI), University of the Witswatersrand, Johannesburg, South Africa, (4)Wits Reproductive Health and HIV Institute, University of the Witswatersrand, South Africa, (5)Wits Reproductive Health and HIV Institute, University of the Witswatersrand, Johannesburg, South Africa, (6)Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore