Kongyon, Supatta, and Apithan Puangsricharern. “Prevalence of Chromosomal Abnormalities by Genetic Amniocentesis for Prenatal Diagnosis at Rajavithi Hospital : 1999-2002”. Thai Journal of Obstetrics and Gynaecology 15, no. 4 (April 20, 2017): 201–207. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/83783.