1. Unsafe abortion. Global and regional estimates of the incidence of unsafe abortion and associated mortality in 2003;World Health Organization,2007
2. Abortion and medicine: a sociopolitical history;Joffe,2009
3. The prevention and management of unsafe abortion;World Health Organization,1992
4. Induced abortion: incidence and trends worldwide from 1995 to 2008;Sedgh;Lancet,2012
5. Safe abortion: technical and policy guidance for health systems;World Health Organization,2012