title: Prenatal informed consent for sonogram: the time for first-trimester nuchal translucency has come.
authors.forename: S T
authors.initials: ST
authors.lastname: Chasen
authors.forename: D W
authors.initials: DW
authors.lastname: Skupski
authors.forename: L B
authors.initials: LB
authors.lastname: McCullough
authors.forename: F A
authors.initials: FA
authors.lastname: Chervenak
mesh_terms: D000782:Aneuploidy; D004314:Down Syndrome / Q000000981:diagnostic imaging* / Q000235:genetics; D005260:Female; D006801:Humans; D007258:Informed Consent; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D018570:Risk Assessment; D016216:Ultrasonography, Prenatal