title: Postoperative analgesia by peridural injection with morphine.
mesh_terms: D000328:Adult; D000368:Aged; D002404:Catheterization; D004824:Epidural Space; D005260:Female; D006801:Humans; D007267:Injections; D008297:Male; D008875:Middle Aged; D009020:Morphine / Q000008:administration & dosage* / Q000009:adverse effects; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D009020:Morphine