1. David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
2. Charles R. Drew University of Medicine and Science, Los Angeles, CA, USA
3. UCLA Fielding School of Public Health, Los Angeles, CA, USA
4. University of Botswana, Gaborone, Botswana
5. Centre for Infectious Disease Epidemiology and Research, University of Cape Town, South Africa
6. Department of Medicine, Botswana-University of Pennsylvania Partnership, Gaborone, Botswana
7. Princess Marina Hospital, Gaborone, Botswana
8. Wits Reproductive Health and HIV Institute (WRHI), University of the Witwatersrand, Johannesburg, South Africa
9. EGA Institute for Women’s Health/Institute for Global Health, University College London, London, UK