1. Centro Rosarino de Estudios Perinatales; Rosario Argentina
2. Department of Obstetrics and Gynaecology; School of Medicine; College of Health Sciences; Nairobi Kenya
3. UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research; Development and Research Training in Human Reproduction (HRP); Department of Reproductive Health and Research; World Health Organization; Geneva Switzerland
4. School of Population Health; Faculty of Medicine, Dentistry and Health Sciences; University of Western Australia; Perth WA Australia