Kabili, Genc First trimester screening for trisomy 21; Do the parameters used detect more pathologies than just Down syndrome? [electronic resource] - European journal of obstetrics, gynecology, and reproductive biology May 2004 - 35-8 p. digital Publication Type: Evaluation Study; Journal Article ISSN: 0301-2115 Standard No.: 10.1016/j.ejogrb.2003.09.044 doi Subjects--Topical Terms: Chorionic Gonadotropin, beta Subunit, Human--bloodDown Syndrome--bloodFemaleHumansNeck--diagnostic imagingPredictive Value of TestsPregnancyPregnancy Complications--bloodPregnancy Trimester, FirstPregnancy-Associated Plasma Protein-A--metabolismPrenatal DiagnosisROC CurveRetrospective StudiesSensitivity and SpecificityUltrasonography