Sivan, E Sonographic imaging of the fetal face and the establishment of normative dimensions for chin length and upper lip width. [electronic resource] - American journal of perinatology Apr 1997 - 191-4 p. digital Publication Type: Journal Article ISSN: 0735-1631 Standard No.: 10.1055/s-2007-994125 doi Subjects--Topical Terms: AnthropometryChin--diagnostic imagingCross-Sectional StudiesFace--diagnostic imagingFemaleGestational AgeHumansLip--diagnostic imagingPregnancyReference ValuesUltrasonography, Prenatal--methods