Yoopoon, Thanasak, and Pongsun Puntachai. “Association between Alpha-fetoprotein Levels during the Second Trimester of Pregnancy and the Incidence of Low Birth Weight Infants at Sunpasitthiprasong Hospital”. Thai Journal of Obstetrics and Gynaecology 34, no. 4 (June 30, 2026): 288–300. accessed September 29, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/278591.