1. United Nations. World family planning 2017-highlights (ST/ESA/SER.A/414); 2017. Available from: https://www.un.org/en/development/desa/population/publications/pdf/family/WFP2017_Highlights.pdf.
2. Women's knowledge, preferences, and practices of modern contraceptive methods in Woreta, Ethiopia
3. United Nations General Assembly. Transforming our world: the 2030 agenda for sustainable development. General assembly resolution 70/1; 2015. Available from: http://www.un.org/ga/search/view_doc.asp?symbol=A/RES/70/1&Lang=E.
4. WHO. Trends in Maternal Mortality 1990 to 2015 Estimates by WHO, UNICEF, UNFPA. Geneva: World Bank Group and the United Nations Population Division; 2015.