Jenkins, Asha, Sendhil Coumary A., and Seetesh Ghose. 2016. “Comparison of the Efficacy of Extra Amniotic Foley Catheter, Intravaginal Prostaglandin E1 Tablet and Intracervical Prostaglandin E2 Gel for Pre Induction Cervical Ripening: A Randomized Comparative Study”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 5 (11):3902-8. https://doi.org/10.18203/2320-1770.ijrcog20163862.