title: Frontonasal facial angle in chromosomally normal fetuses at 11+0 to 13+6 weeks.
authors.affiliation: Department of Surgery, Section of Gynaecology and Obstetrics, University of Rome Tor Vergata, Rome, Italy.
authors.forename: Roberta
authors.initials: R
authors.lastname: Vicario
authors.forename: Linda Maria Azzurra
authors.initials: LM
authors.lastname: Pirollo
authors.forename: Cristina
authors.initials: C
authors.lastname: De Angelis
authors.forename: Marianovella
authors.initials: M
authors.lastname: Narcisi
authors.forename: Adalgisa
authors.initials: A
authors.lastname: Pietropolli
authors.forename: Emilio
authors.initials: E
authors.lastname: Piccione
mesh_terms: D000328:Adult; D018568:Crown-Rump Length; D004314:Down Syndrome / Q000000981:diagnostic imaging; D005145:Face / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008403:Mass Screening; D048208:Nuchal Translucency Measurement; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011446:Prospective Studies; D012016:Reference Values; D016216:Ultrasonography, Prenatal