1. Maternal deaths averted by contraceptive use: an analysis of 172 countries
2. Darroch JE Adding It Up: investing in Contraception and Maternal and Newborn Health, 2017—Estimation Methodology, New York: Guttmacher Institute; 2018. Available from: https://www.guttmacher.org/report/adding-it-up-investing-in-contraception-maternalnewborn-health-2017-methodology. Accessed November 24, 2021.
3. Family Planning 2020 (FP2020). Measurement. In: FP2020: the Way Ahead, 2016–2017. Washington, DC; 2020. Available from: http://progress.familyplanning2020.org/sites/all/themes/custom/progressreport/pdf/FP2020_2019Report_WEB.pdf. Accessed January 26, 2021.
4. Ali MM, Cleland J, Shah IH Causes and consequences of contraceptive discontinuation: evidence from 60 demographic and health surveys. World Health Organization; 2012. Available from: https://apps.who.int/iris/bitstream/handle/10665/75429/9789241504058_eng.pdf?sequence=1&isAllowed=y. Accessed January 26, 2021.
5. Unmet need for family planning and barriers to contraceptive use in Kaduna, Nigeria: culture, myths and perceptions