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7. Screening for Down's syndrome. Keatinge RM, Williams ES. BMJ; 1991 Oct 26; 303(6809):1063. PubMed ID: 1835415 [No Abstract] [Full Text] [Related]
8. Antenatal screening for Down's syndrome: where are we and where next? Haddow JE. Lancet; 1998 Aug 01; 352(9125):336-7. PubMed ID: 9717914 [No Abstract] [Full Text] [Related]
9. [Prenatal screening for Down's syndrome]. Qin Q, Christiansen M, Norgaard-Pedersen B. Zhonghua Fu Chan Ke Za Zhi; 1997 Nov 01; 32(11):694-7. PubMed ID: 9639772 [No Abstract] [Full Text] [Related]
10. Measurement of choriogonadotropin free beta-subunit: an alternative to choriogonadotropin in screening for fetal Down's syndrome? Knight GJ, Cole LA. Clin Chem; 1991 Jun 01; 37(6):779-82. PubMed ID: 1828723 [No Abstract] [Full Text] [Related]
18. Antenatal screening for Down's syndrome. The west of Scotland's screening programme. Byrne A, Cameron A, McIntosh K, McNay M, Murphy K. BMJ; 1993 Sep 11; 307(6905):680. PubMed ID: 8401067 [No Abstract] [Full Text] [Related]