1. WHO. Maternal Mortality Global Health Observaotory (GHO) data. Geneva, Switzeland: World Health Organization; 2015. Available from:
http://www.who.int/gho/maternal_health/mortality/maternal_mortality_text/en/
2. WHO. The World health report : 2005 : make every mother and child count. Geneva, Switzeland: World Health Organization; 2005.
3. Campbell OM, Graham WJ. Strategies for reducing maternal mortality: getting on with what works. Lancet. 2006;368:1284–99.
4. Starr AM. Safe motherhood initiative: 20 years and counting. Lancet. 2006;368:1130–2. Available from:
http://www.ncbi.nlm.nih.gov/pubmed/17011924
5. WHO. Constitution of World Health Organization (WHO) (1946). Basic Document. 45th edition suplement ed. Geneva, Switzerland: World Health Organization; 2006.