University of Liverpool, University of Liverpool, Hospital Israelita Albert Einstein, University of Liverpool, Centro Rosarino de Estudios Perinatales (CREP), Centro Rosarino de Estudios Perinatales (CREP), University of São Paulo (USP) - Ribeirão Preto Medical SchoolUniversity of São Paulo (USP) - Department of Social Medicine, World Health Organization (WHO) - UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, World Health Organization (WHO) - UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction and University of Liverpool

University of Liverpool, University of Malawi - Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Kamuzu University of Health Sciences, University of Liverpool, University of Malawi - Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Ministry of Health (Malawi), University of Malawi - Department of Obstetrics and Gynaecology, Ministry of Health (Malawi), University of Malawi - Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi - Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi - Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi - Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Ministry of Health (Malawi), University of Malawi - Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi - Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Birmingham, University of Birmingham - Institute of Applied Health Research and University of Liverpool