Chaiyarach MD,*, Sukanya, and Saknan Manotaya MD.*. “Nomogram of Thai fetal maxillary bone length at 11-13+6 weeks of gestation”. Thai Journal of Obstetrics and Gynaecology 20, no. 2 (June 30, 2012): 63–68. accessed April 29, 2025. https://he02.tci-thaijo.org/index.php/tjog/article/view/2016.