Chelsea Morroni1, Molly Findley2, Carolyn Westhoff3. 1. University College London Institute for Women's Health and Institute for Global Health; The Botswana UPenn Partnership; University of the Witwatersrand, Wits Reproductive Health and HIV Institute. Electronic address: c.morroni@ucl.ac.uk. 2. Albert Einstein College of Medicine. Electronic address: mfindley@montefiore.org. 3. Columbia University Medical Center. Electronic address: clw3@cumc.columbia.edu.