Mahawerawat, Sukanda, and Rungruedee Jeerasap. 2012. “Comparison of Unintended Uterine Extension between Cephalad-caudad and Transverse Blunt Expansion Techniques for Low Transverse Cesarean Delivery”. Thai Journal of Obstetrics and Gynaecology 18 (3). Bangkok, Thailand:120-25. https://he02.tci-thaijo.org/index.php/tjog/article/view/1356.