1 Bureau for Global Health, US Agency for International Development, Arlington, VA 22202, USA. Electronic address: asrivastava@usaid.gov.
2 Bureau for Global Health, US Agency for International Development, Arlington, VA 22202, USA.
3 International AIDS Society, Cape Town, South Africa.
4 International AIDS Society, Cape Town, South Africa; Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa.