Chamnan, S., and S. Intharaburan. “Comparison of Sublingual and Vaginal Misoprostol for Cervical Ripening before Curettage: A randomized controlled trial”. Thai Journal of Obstetrics and Gynaecology, vol. 24, no. 1, Mar. 2016, pp. 43-49, doi:10.14456/tjog.2016.13.