title: Assessment of clinical methods of evaluation and isotope techniques in analgesic trials in rheumatoid arthritis.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D001241:Aspirin / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D006801:Humans; D007213:Indomethacin / Q000627:therapeutic use*; D010919:Placebos; D011868:Radioisotopes; D013667:Technetium / Q000378:metabolism; D014978:Xenon
chemical_list: D010919:Placebos; D011868:Radioisotopes; D014978:Xenon; D013667:Technetium; D001241:Aspirin; D007213:Indomethacin