title: Transcutaneous electrical nerve stimulation for the relief of postoperative pain.
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic; D004599:Electric Stimulation Therapy; D006801:Humans; D008614:Meperidine / Q000627:therapeutic use; D010149:Postoperative Pain / Q000188:drug therapy / Q000209:etiology / Q000628:therapy*
chemical_list: D008614:Meperidine