1 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, Avenue Appia 20, 1211 Geneva 27, Switzerland.
2 Evidence Based Healthcare Postgraduate Program, São Paulo Federal University, São Paulo, Brazil.
3 National Maternity Hospital, Dublin, Ireland.
4 Department of Obstetrics and Gynaecology, Sahlgrenska University Hospital, Gothenburg, Sweden.
5 Department of Health Promotion, World Health Organization Regional Office for the Eastern Mediterranean, Cairo, Egypt.
6 Lithuanian University of Health Sciences, Kaunas, Lithuania.
7 Hospital de La Ribera, Valencia, Spain.
8 Department of Obstetrics and Gynaecology, Haukeland University Hospital, Bergen, Norway.
9 Department of Perinatology, University Medical Centre Ljubljana, Ljubljana, Slovenia.