Intraspinal morphine for postoperative analgesia.
D004824:Epidural Space; D006801:Humans; D007267:Injections; D007278:Injections, Spinal; D009020:Morphine / Q000008:administration & dosage* / Q000009:adverse effects; D010149:Postoperative Pain / Q000188:drug therapy*
D009020:Morphine