Shetty, S. J., S. J C, A. Arpana, and C. Sathyanarayana. “Comparative Study of Foley’s Catheter and Prostaglandin E2 Gel for Pre-Induction Cervical Ripening”. Asian Journal of Medical Sciences, vol. 13, no. 4, Apr. 2022, pp. 112-7, doi:10.3126/ajms.v13i4.41856.