title: The accuracy of assigned risks in maternal serum screening.
authors.forename: J A
authors.initials: JA
authors.lastname: Canick
authors.forename: S
authors.initials: S
authors.lastname: Rish
mesh_terms: D004314:Down Syndrome / Q000097:blood* / Q000175:diagnosis*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012307:Risk Factors; D012680:Sensitivity and Specificity