title: How much does parity matter?
authors.forename: Linda J
authors.initials: LJ
authors.lastname: Heffner
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008423:Maternal Age; D010298:Parity; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology; D011256:Pregnancy Outcome / Q000453:epidemiology*; D012307:Risk Factors