World Health Organization (WHO), World Health Organization (WHO) - UNDP-UNFPA-UNICEF-WHO-World Bank Special Programme of Research, Canadian University Dubai, Nagasaki University - Department of Global Health, University of Birmingham, University of Birmingham - WHO Collaborating Centre for Global Women’s Health, World Health Organization (WHO), World Health Organization (WHO) - UNDP-UNFPA-UNICEF-WHO-World Bank Special Programme of Research, Gynuity Health Projects, New York, Concept Foundation, University Hospital Zurich, University of Campinas - Department of Obstetrics & Gynecology, Bordeaux University Hospital - Department of Obstetrics and Gynecology, University of Birmingham, University of Birmingham, University of Birmingham - Birmingham Clinical Trials Unit, University of Birmingham, World Health Organization (WHO) - UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction and Independent

World Health Organization (WHO), World Health Organization (WHO) - UNDP-UNFPA-UNICEF-WHO-World Bank Special Programme of Research, Canadian University Dubai, Spanish Council for Scientific Research (CSIC) - Institute of Environmental Assessment and Water Research (IDAEA), World Health Organization (WHO) - UNDP-UNFPA-UNICEF-WHO-World Bank Special Programme of Research, University of Birmingham, University of Birmingham, University of Birmingham - WHO Collaborating Centre for Global Women’s Health, University of Birmingham, University of Birmingham - Birmingham Clinical Trials Unit, University of Birmingham and World Health Organization (WHO) - UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction

University of Birmingham, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University College London, affiliation not provided to SSRN, University of Birmingham - Birmingham Clinical Trials Unit and University of Exeter