Government of the United States of America - Food and Drug Administration (FDA), Independent, University of Oxford - Nuffield Department of Population Health, University of Florida - Department of Biostatistics, University of the West Indies (Mona), University of Bristol, Facultad de Medicina, Universidad Nacional Autónoma de México, University of the Witwatersrand - Reproductive Health and HIV Research Unit (RHRU), University of Bristol - Department of Population Health Sciences, Universite Paris Descartes, Independent, World Health Organization (WHO), World Health Organization (WHO), World Health Organization (WHO), Independent and Independent