title: Antenatal screening for Down's syndrome.
authors.forename: J
authors.initials: J
authors.lastname: Topping
authors.forename: M J
authors.initials: MJ
authors.lastname: McCormack
authors.forename: R T
authors.initials: RT
authors.lastname: Howells
mesh_terms: D000328:Adult; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D008403:Mass Screening; D008423:Maternal Age; D011247:Pregnancy; D018566:Pregnancy, High-Risk; D011296:Prenatal Diagnosis