Down syndrome screening. ACOG Committee Opinion: Committee on Obstetric Practice. Number 141--August 1994 (replaces No. 76, December 1989).
D000328:Adult; D002887:Chromosomes, Human, Pair 18; D004314:Down Syndrome / Q000517:prevention & control*; D005260:Female; D005820:Genetic Testing; D006801:Humans; D008297:Male; D008403:Mass Screening; D008423:Maternal Age; D011247:Pregnancy; D018566:Pregnancy, High-Risk; D011296:Prenatal Diagnosis; D012307:Risk Factors; D014314:Trisomy