title: Screening for Down's syndrome.
authors.forename: R M
authors.initials: RM
authors.lastname: Keatinge
authors.forename: E S
authors.initials: ES
authors.lastname: Williams
mesh_terms: D000328:Adult; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D018566:Pregnancy, High-Risk; D011296:Prenatal Diagnosis / Q000191:economics*