1. Maternal Mortality in 2005—Estimates Developed by WHO, UNICEF,UNFPA and the World Bank,2007
2. The familial technique for linking maternal death with poverty;Graham;Lancet,2004
3. Unsafe Abortion—Global and Regional Estimates of the Incidence of Unsafe Abortion and Associated Mortality in 2003,2007
4. The importance of family planning in reducing maternal mortality;Fortney;Stud Fam Plann,1987
5. Contraceptive Trends in Developing Countries;Khan,2007