Jenkins, A.; Coumary A., S.; Ghose, S. 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. Int J Reprod Contracept Obstet Gynecol 2016, 5, 3902-3908.