Badr, N.S., El Mallah, S.Y., El Mahdy, M.I. and Ahmad, H.F. 2021. Maternal serum CA-125 repeated measurement during pregnancy and how to use as a prognostic factor of first trimester pregnancy outcome. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 11, 1 (Dec. 2021), 1–6. DOI:https://doi.org/10.18203/2320-1770.ijrcog20215068.