title: Comparative evaluation of subarachnoid & epidural morphine for post-operative analgesia.
mesh_terms: D000328:Adult; D000698:Analgesia / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009020:Morphine / Q000008:administration & dosage*; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D009020:Morphine