UN Statistics Division. “Developing regions”. Accessed December 20, 2017.gapm.io/xunsdef.
childmortality.org.
UN-Pop[4]. Annual population by age—Female, medium fertility variant. World Population Prospects 2017. UN Population Division. Accessed November 7, 2017. gapm.io/xpopage.
UN-Pop[5]. World Population Probabilistic Projections. Accessed November 29, 2017. gapm.io/xpopproj.