Thakkinstian, Ammarin, Maneerat Srimanoi, and Somsak Suthatvoravut. “Prediction of Time to Delivery: Elective Induction Versus Spontaneous Labor”. Thai Journal of Obstetrics and Gynaecology 11, no. 4 (October 1, 1999): 217. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/95030.