Shankarappa, V. K.; Natarajan, P.; Natarajan, M. Comparison of PGE2 Gel Alone Versus Sequential Use of Foley’s Catheter and PGE2 Gel in the Ripening of Unfavorable Cervix: A Retrospective Study. Int J Reprod Contracept Obstet Gynecol 2020, 10, 127-131.