Opadiran, R. O., A. D. Isah, N. Adewole, and K. I. Omonua. “Pregnancy Outcome in Elderly Primigravidae at a Nigerian Tertiary Hospital: A Five-Year Review”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 7, no. 2 (January 23, 2018): 391–395. Accessed October 2, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/4128.