Suwanrath , C., Kor-anantakul, O., Leetanaporn, R., Suntharasaj, T., Liabsuetrakul , T. and Ratanaprueksachat , R. 1999. Genetic Amniocentesis : 10 years experience at Songklanagarind Hospital. Thai Journal of Obstetrics and Gynaecology. 11, 2 (Jun. 1999), 105–109.