title: [Postoperative analgesia with epidural methadone].
mesh_terms: D000767:Anesthesia, Epidural; D006801:Humans; D008691:Methadone / Q000008:administration & dosage*; D010147:Pain Measurement; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D008691:Methadone