1. The Millennium Development Goals report 2012;United Nations,2012
2. Trends in maternal mortality: 1990 to 2010;World Health Organization, UNICEF, UNFPA and the World Bank,2012
3. The selection and use of essential medicines: report of the WHO Expert Committee, 2007 including the 15th model list of essential medicines;World Health Organization,2007
4. Progress towards Millennium Development Goals 4 and 5 on maternal and child mortality: an updated systematic analysis;Lozano;Lancet,2011
5. Maternal mortality: surprise, hope, and urgent action;Horton;Lancet,2010