title: Changing patterns in an obstetrical population: ten years' experience.
mesh_terms: D000773:Anesthesia, Obstetrical; D036861:Delivery, Obstetric / Q000379:methods; D005260:Female; D006801:Humans; D008393:Marriage; D010298:Parity; D011247:Pregnancy; D013223:Statistics as Topic; D013997:Time Factors