Shaaban, O.M., Ahmed, H.A., Ali, M.K., Abbas, A.M., Nasr, A. and Makhlouf, A.M. 2018. Evolution of second trimester low implanted placenta to previa at term: a prospective cohort study. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 7, 11 (Oct. 2018), 4330–4335. DOI:https://doi.org/10.18203/2320-1770.ijrcog20184473.