1. Trends in maternal mortality: 1990–2013;World Health Organization, UNICEF, UNFPA, and the World Bank,2014
2. 2014 Status Report on Maternal, Newborn and Child Health. Report from the first meeting of the Specialized Technical Committee on Health, Population and Drug Control, April 2015;African Union,2015
3. Keeping promises, measuring results: Commission on Information and Accountability for Women’s and Children’s Health;World Health Organization,2011
4. Beyond the numbers: reviewing maternal deaths and complications to make pregnancy safer;World Health Organization,2004
5. Verbal autopsy standards: 2012 WHO Verbal Autopsy Instrument;World Health Organization, Health Metric Network, Indepth Network,2012