title: The significance of the second trimester sonographic soft markers in pregnancies after normal first trimester screening.
authors: Marja
authors: M
authors: Kaijomaa
authors: Veli-Matti
authors: VM
authors: Ulander
authors: Markku
authors: M
authors: Ryynanen
authors: Vedran
authors: V
authors: Stefanovic
mesh_terms: D000293:Adolescent; D000328:Adult; D015415:Biomarkers; D004314:Down Syndrome / Q000000981:diagnostic imaging* / Q000453:epidemiology; D005260:Female; D006801:Humans; D008875:Middle Aged; D011237:Predictive Value of Tests; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D012189:Retrospective Studies; D016216:Ultrasonography, Prenatal; D055815:Young Adult
chemical_list: D015415:Biomarkers