title: Is there a nuchal translucency threshold above which biochemistry is unnecessary for 1st trimester screening in the Chinese population?
authors.affiliation: Prenatal Diagnostic Center, Guangzhou Maternal and Neonatal Hospital, Guangzhou Women and Children's Medical Center, Guangzhou Medical College, Guangzhou, Guangdong, China.
authors.forename: C
authors.initials: C
authors.lastname: Liao
authors.forename: D-Z
authors.initials: DZ
authors.lastname: Li
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000097:blood; D002681:China; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood*; D004314:Down Syndrome / Q000097:blood / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D048208:Nuchal Translucency Measurement; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011266:Pregnancy-Associated Plasma Protein-A / Q000378:metabolism*; D018570:Risk Assessment; D055815:Young Adult
chemical_list: D015415:Biomarkers; D018997:Chorionic Gonadotropin, beta Subunit, Human; D011266:Pregnancy-Associated Plasma Protein-A