title: Parity and Down's syndrome.
authors.forename: E E
authors.initials: EE
authors.lastname: Castilla
authors.forename: J E
authors.initials: JE
authors.lastname: Paz
mesh_terms: D000328:Adult; D004314:Down Syndrome / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008423:Maternal Age; D008875:Middle Aged; D010298:Parity; D011247:Pregnancy; D012307:Risk Factors