title: Accuracy of expected risk of Down syndrome using the second-trimester triple test.
authors.forename: Chris
authors.initials: C
authors.lastname: Meier
authors.forename: Tianhua
authors.initials: T
authors.lastname: Huang
authors.forename: Philip R
authors.initials: PR
authors.lastname: Wyatt
authors.forename: Anne M
authors.initials: AM
authors.lastname: Summers
mesh_terms: D006063:Chorionic Gonadotropin / Q000097:blood; D004314:Down Syndrome / Q000097:blood* / Q000175:diagnosis* / Q000453:epidemiology; D004964:Estriol / Q000097:blood; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D012307:Risk Factors; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D006063:Chorionic Gonadotropin; D000509:alpha-Fetoproteins; D004964:Estriol