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4. UK multicentre project on assessment of risk of trisomy 21 by maternal age and fetal nuchal-translucency thickness at 10-14 weeks of gestation. Fetal Medicine Foundation First Trimester Screening Group. Snijders RJ, Noble P, Sebire N, Souka A, Nicolaides KH. Lancet; 1998 Aug 01; 352(9125):343-6. PubMed ID: 9717920 [Abstract] [Full Text] [Related]
7. Screening for trisomy 21 in twins using first trimester ultrasound and maternal serum biochemistry in a one-stop clinic: a review of three years experience. Spencer K, Nicolaides KH. BJOG; 2003 Mar 01; 110(3):276-80. PubMed ID: 12628267 [Abstract] [Full Text] [Related]
8. Maternal serum hCG and fetal nuchal translucency thickness for the prediction of fetal trisomies in the first trimester of pregnancy. Brizot ML, Snijders RJ, Butler J, Bersinger NA, Nicolaides KH. Br J Obstet Gynaecol; 1995 Feb 01; 102(2):127-32. PubMed ID: 7538782 [Abstract] [Full Text] [Related]