Omo-Aghoja, L. O., Onohwakpor, E., & Omotoso, J. (2020). Environmental and Socio-demographic Determinants of the Age at Menarche among Secondary School Girls in the Niger-Delta Region of Nigeria. African Journal of Tropical Medicine and Biomedical Research, 1(3), 43–49. Retrieved from https://ajtmbr.org.ng/index.php/home/article/view/16