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27. Comparison and integration of first trimester fetal nuchal translucency and second trimester maternal serum screening for fetal Down syndrome. Lam YH, Lee CP, Sin SY, Tang R, Wong HS, Wong SF, Fong DY, Tang MH, Woo HH. Prenat Diagn; 2002 Aug; 22(8):730-5. PubMed ID: 12210586 [Abstract] [Full Text] [Related]
35. Effectiveness of combining maternal serum alpha-fetoprotein and hCG in a second-trimester screening program for Down syndrome. Mooney RA, Peterson CJ, French CA, Saller DN, Arvan DA. Obstet Gynecol; 1994 Aug; 84(2):298-303. PubMed ID: 7518896 [Abstract] [Full Text] [Related]
39. [Second trimester maternal serum screening for Down's syndrome in women of advanced maternal age: a multi-center prospective study]. Qi QW, Jiang YL, Liu JT, Bian XM, Li Y, Lü SM, Zhu BS, Wang H, Xu ZF, Pan XY, Cai Y. Zhonghua Fu Chan Ke Za Zhi; 2008 Oct; 43(10):737-41. PubMed ID: 19087538 [Abstract] [Full Text] [Related]