Lubusky, Marek Single umbilical artery and its siding in the second trimester of pregnancy: relation to chromosomal defects. [electronic resource] - Prenatal diagnosis Apr 2007 - 327-31 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0197-3851 Standard No.: 10.1002/pd.1672 doi Subjects--Topical Terms: AmniocentesisChromosome AberrationsChromosome Disorders--diagnosisFemaleHumansPregnancyPregnancy ComplicationsPregnancy Trimester, SecondPrenatal Diagnosis--methodsProspective StudiesTrisomy--diagnosisUltrasonographyUmbilical Arteries--abnormalities