2Smith NC,Hau C.A six year study of the antenatal detection of fetal abnormality in six Scottish health boards.Br J Obstet Gynaecol,1999;106(3):206-212.
3Daffos F,Capella-Pavlovsky M,Forestier F.A new procedure for fetal blood sampling in utero:preliminary results of fifty-three cases.Am J Obstet Gynecol,1983;146(7):985-987.
4Kabra M,Saxena R,Chinnappan D,et al.Karyotyping of at risk fetuses by cordocentesis in advanced gestation.Indian J Med Res,1996;104:288-291.
5Acar A,Balci O,Gezginc K,et al.Evaluation of the results of cordocentesis.Taiwan J Obstet Gyneco,2007;46(4):405-409.