Suwanrath , C., Kor-anantakul, O., Leetanaporn, R., Suntharasaj, T., Liabsuetrakul , T., & Ratanaprueksachat , R. (1999). Genetic Amniocentesis : 10 years experience at Songklanagarind Hospital. Thai Journal of Obstetrics and Gynaecology, 11(2), 105–109. retrieved from https://he02.tci-thaijo.org/index.php/tjog/article/view/257168