Shady, N. W., Sallam, H. F., & Abbas, A. M. (2017). Placenta accreta and emergency cesarean delivery correlates to cervical length and transcervical placental thickness measurement. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 6(11), 4808–4813. https://doi.org/10.18203/2320-1770.ijrcog20174991