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5. Maternal serum biochemistry at 11-13(+6) weeks in relation to the presence or absence of the fetal nasal bone on ultrasonography in chromosomally abnormal fetuses: an updated analysis of integrated ultrasound and biochemical screening. Cicero S; Spencer K; Avgidou K; Faiola S; Nicolaides KH Prenat Diagn; 2005 Nov; 25(11):977-83. PubMed ID: 16245371 [TBL] [Abstract][Full Text] [Related]
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