Gülmezoglu A Metin, Chandler Jackie, Shepperd Sasha, Pantoja Tomás
Maternal and Perinatal Health and Preventing Unsafe Abortion, UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme for Research, Development and Research Training in Human Reproduction (HRP), Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland.
Cochrane Database Syst Rev. 2013 Nov 8;2013(11):ED000073. doi: 10.1002/14651858.ED000073.