1. Hogan MC, et al: Maternal mortality for 181 countries, 1980: a systematic analysis of progress towards Millennium Development Goal 5. Lancet. 2008, 375 (9726): p 1609-p 1623.
2. World Bank databank: Nigeria. 2008, Available at http://data.worldbank.org/country/nigeria Accessed November 24 2010,
3. National Bureau of Statistics, Federal Republic of Nigeria: Annual Abstract of Statistics. 2009, Available at http://www.nigerianstat.gov.ng . Accessed August 17, 2011,
4. World Bank (2008) Lifetime risk of maternal death Nigeria. 2010, Available at http://data.worldbank.org/indicator/SH.STA.MMRT . Accessed November 24,
5. Onyebuchi-Chukwu CO: Nigeria and the millennium development goals: progress towards 2015. A speech presented at the 65th Session of the United Nations General Assembly to review the Millennium Development Goals. 2010, New York, Available at http://goo.gl/DZ4s9 . Accessed January 2011,