1. Centro Rosarino de Estudios Perinatales (CREP) Rosario Argentina
2. Fundacio Blanquerna Barcelona Spain
3. Department of Global Public Health, Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht Utrecht University Utrecht the Netherlands
4. Department of Obstetrics and Gynaecology, Queen Mary Hospital The University of Hong Kong Hong Kong SAR China
5. 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