Suwajanakorn, S., Tannirandorn, Y., Romayanan, O., & Phaosavasdi, S. (1994). Midtrimester Amniocentesis for Antenatal Diagnosis of Genetic Disorder : Chulalongkorn Hospital Experience. Thai Journal of Obstetrics and Gynaecology, 6(1), 43–49. retrieved from https://he02.tci-thaijo.org/index.php/tjog/article/view/257803