Suwajanakorn, Somchai, Yuen Tannirandorn, Orasri Romayanan, and Sukhit Phaosavasdi. 1994. “Midtrimester Amniocentesis for Antenatal Diagnosis of Genetic Disorder : Chulalongkorn Hospital Experience”. Thai Journal of Obstetrics and Gynaecology 6 (1). Bangkok, Thailand:43-49. https://he02.tci-thaijo.org/index.php/tjog/article/view/257803.