title: Second test for Down's syndrome is recommended for NHS.
authors.affiliation: London.
authors.forename: Jacqui
authors.initials: J
authors.lastname: Wise
mesh_terms: D015415:Biomarkers / Q000097:blood; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D011262:Pregnancy Trimester, Second / Q000097:blood*; D011296:Prenatal Diagnosis / Q000379:methods; D013222:State Medicine; D006113:United Kingdom
chemical_list: D015415:Biomarkers