Instituto de Efectividad Clínica y Sanitaria (IECS-CONICET), Buenos Aires, Argentina. UNDP-UNFPA-UNICEF-WHO-World Bank Special Program of Research, Development, and Research Training in Human Reproduction (HRP), Department of Sexual and Reproductive Health and Research, World Health Organization, Geneva, Switzerland. University of Botswana, Gaborone, Botswana. Effective Care Research Unit, University of the Witwatersrand/Walter Sisulu University, South Africa. Université de Paris, U1153 Centre for Epidemiology and Statistics Sorbonne Paris Cité (CRESS), Obstetrical Perinatal and Pediatric Epidemiology Research Team, EPOPé, INSERM, INRA, Paris, France. Concept Foundation, Geneva, Switzerland. Department of Obstetrics, Birth Centre Wilhelmina's Children Hospital, Division Woman and Baby, University Medical Center Utrecht, the Netherlands.