title: Epidural diamorphine and fentanyl for postoperative pain.
mesh_terms: D005260:Female; D005283:Fentanyl / Q000627:therapeutic use*; D003932:Heroin / Q000627:therapeutic use*; D006801:Humans; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D003932:Heroin; D005283:Fentanyl