title: Sustained-release morphine for postoperative analgesia.
mesh_terms: D000328:Adult; D000368:Aged; D003692:Delayed-Action Preparations; D005260:Female; D006801:Humans; D008875:Middle Aged; D009020:Morphine / Q000008:administration & dosage*; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D003692:Delayed-Action Preparations; D009020:Morphine