1. World Health Organisation, UNICEF, UN Population Fund. Maternal mortality in 2000: estimates developed by WHO, UNICEF, UNFPA. Geneva: World Health Organization, 2004.
2. World Health Organisation. World health report 2005. Make every mother and child count. Geneva: World Health Organization, 2005.
3. Ronsmans C, Graham WJ, Lancet Maternal Survival Series Steering Group. Maternal mortality: who, when, where, and why. Lancet 2006;368:1189–1200.
4. United Nations. The Millennium Development Goals report. United Nations, 2005. Available at: http://unstats.un.org/unsd/mi/pdf/MDG%20Book.pdf.
5. Campbell OMR, Graham W. Measuring maternal mortality and morbidity: levels and trends. London: London School of Tropical Medicine and Hygiene, 1991. Maternal and Child Epidemiology Unit Publication No. 2.