Taechakraichana, N., Jaisamrarn, U., Tannirandorn, Y., Trivijitsilp, P., & Termrungruanglert, W. (1996). Prostaglandin E2 Vaginal Suppository for Induction of Labour in Favourable and Unfavourable Cervix. Thai Journal of Obstetrics and Gynaecology, 8(2), 87–92. retrieved from https://he02.tci-thaijo.org/index.php/tjog/article/view/257689