Liabsuetrakul, Tippawan. “Trends of Teenage Pregnancy and Pregnancy Outcomes”. Thai Journal of Obstetrics and Gynaecology 20, no. 4 (October 1, 2012): 162–165. accessed August 29, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/4681.