Charoenvidhya, D., B. Uerpairojkit, Y. Tannirandorn, S. Manotaya, and S. Tanawattanacharoen. “Normal Values For Fetal Thoracic Parameters”. Thai Journal of Obstetrics and Gynaecology, vol. 10, no. 1, Mar. 1998, pp. 9-14, https://he02.tci-thaijo.org/index.php/tjog/article/view/257110.