title: The effect of epidural analgesia on the frequency of instrumental delivery.
authors: D H
authors: DH
authors: Chestnut
mesh_terms: D000767:Anesthesia, Epidural; D000773:Anesthesia, Obstetrical; D005113:Extraction, Obstetrical / Q000295:instrumentation*; D005260:Female; D006801:Humans; D007748:Labor Stage, Second; D009772:Obstetrical Forceps; D011247:Pregnancy