title: Epidural narcotic analgesia.
mesh_terms: D000698:Analgesia / Q000379:methods*; D004824:Epidural Space; D005260:Female; D006801:Humans; D007267:Injections; D009020:Morphine / Q000008:administration & dosage / Q000627:therapeutic use*; D010149:Postoperative Pain / Q000188:drug therapy*; D011247:Pregnancy; D013115:Spinal Canal
chemical_list: D009020:Morphine