Antenatal detection of Down syndrome by sonography.
D000328:Adult; D004314:Down Syndrome / Q000175:diagnosis*; D004694:Endocardial Cushion Defects / Q000175:diagnosis; D005260:Female; D006801:Humans; D007415:Intestinal Obstruction / Q000175:diagnosis; D007421:Intestine, Small; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014463:Ultrasonography