title: Comparison of two Down syndrome screening strategies for women aged 35 and older.
authors.forename: G E
authors.initials: GE
authors.lastname: Palomaki
authors.forename: J E
authors.initials: JE
authors.lastname: Haddow
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood; D004314:Down Syndrome / Q000175:diagnosis* / Q000453:epidemiology / Q000235:genetics; D004964:Estriol / Q000097:blood; D005260:Female; D006801:Humans; D007621:Karyotyping; D008403:Mass Screening; D008423:Maternal Age; D008875:Middle Aged; D011247:Pregnancy; D018566:Pregnancy, High-Risk; D012307:Risk Factors; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D006063:Chorionic Gonadotropin; D000509:alpha-Fetoproteins; D004964:Estriol