Alam, A., & Ahmed, E. A. (2017). A comparative study of intra-cervical foley’s catheter and PGE2 gel for pre-induction cervical ripening. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 5(8), 2644–2647. https://doi.org/10.18203/2320-1770.ijrcog20162637