University of Birmingham, University of Wolverhampton, University of Birmingham, University of Birmingham, University of Birmingham, Jahangirnagar University, Texas Tech University, University of Birmingham, University of Birmingham, Canadian University Dubai, CIBER de Epidemiología y Salud Pública (CIBERESP) - Clinical Biostatistics Unit, 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) and University of Birmingham