Balungwe, S., R. Maroyi, M. Joyeux, M. Omari, M. Philémon, and O. Nyakiyo. “Seric Status of Vitamin D Among Nulligest Women at the General Reference Hospital of Panzi in Democratic Republic of the Congo”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 10, no. 5, Apr. 2021, pp. 1963-6, doi:10.18203/2320-1770.ijrcog20211520.