1. National Population Commission (NPC) [Nigeria] and ICF. Nigeria demographic and health survey 2018. Abuja: NPC and ICF. 2019. https://dhsprogram.com/pubs/pdf/FR359/FR359.pdf.
2. Okoli C, Hajizadeh M, Rahman MM, Khanam R. Geographical and socioeconomic inequalities in the utilization of maternal healthcare services in Nigeria: 2003–2017. BMC Health Serv Res. 2020;20(1):849.
3. Uneke CJ, Sombie I, Uro-Chukwu HC, Johnson E. Developing equity-focused interventions for maternal and child health in Nigeria: an evidence synthesis for policy, based on equitable impact sensitive tool (EQUIST). Pan Afr Med J. 2019;25(34):158.
4. WHO. Levels and trends in child mortality 2012. 2012. Accessed 19 July 2020.
5. World Bank. Population, total—Nigeria. The World Bank Group. 2020. https://data.worldbank.org/indicator/SP.POP.TOTL?locations=NG.