1. Department of Medicine; Brown University; Providence RI USA
2. Department of Community Health and Psychiatry; University of the West Indies; Mona, Kingston Jamaica
3. Department of Infectious Disease Epidemiology; London School of Hygiene and Tropical Medicine; London UK
4. Department of Women's Health; King's College London; London UK
5. Department of Obstetrics and Gynecology; University of Campinas; São Paulo Brazil
6. UNDP-UNFPA-UNICEF-WHO-World Bank Special Programme of Research; Development and Research Training in Human Reproduction (HRP); Department of Reproductive Health and Research; WHO; Geneva Switzerland
7. School of Public Health; Department of Population, Family and Reproductive Health; University of Ghana; Accra Ghana