1. Koblinsky M: Reducing Maternal Mortality. Learning from Bolivia, China, Egypt, Honduras, Indonesia, Jamaica, and Zimbabwe. 2003, Washington, D.C: The World Bank
2. Prual A, Bouvier-Colle MH, de Bernis L, Breart G: Severe maternal morbidity from direct obstetric causes in West Africa: incidence and case fatality rates. Bull World Health Organ. 2000, 78: 593-602.
3. WHO, UNICEF, UNFPA, The World Bank: Trends of maternal mortality: 1990 to 2008 estimates developed by WHO, UNICEF, UNFPA and The World Bank. 2010, Geneva: WHO Press
4. Tinker A, Koblinsky M, Daly P, Rooney C, Leighton C, Griffiths M, Zahidul A, Kwast B: Making motherhood safe (World Bank Discussion Paper, No. 202). 1993, Washington, DC: The World Bank
5. Hogan MC, Foreman KJ, Naghavi M, Ahn SY, Wang M, Makela SM, Lopez AD, Lozano R, Murray C: Maternal mortality for 181 countries, 1980--2008: a systematic analysis of progress towards Millennium Development Goal 5. Lancet. 2010, 375: 1609-1623. 10.1016/S0140-6736(10)60518-1.