title: Calculation of Down's syndrome risk.
authors.forename: D G
authors.initials: DG
authors.lastname: Daniel
authors.forename: T
authors.initials: T
authors.lastname: Reynolds
authors.forename: M D
authors.initials: MD
authors.lastname: Penney
mesh_terms: D006063:Chorionic Gonadotropin / Q000097:blood*; D004314:Down Syndrome / Q000453:epidemiology*; D005260:Female; D006801:Humans; D010298:Parity / Q000502:physiology*; D011247:Pregnancy; D012307:Risk Factors
chemical_list: D006063:Chorionic Gonadotropin