title: Letter: B.C.G. in rheumatoid arthritis.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000628:therapy*; D001500:BCG Vaccine / Q000008:administration & dosage / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D006801:Humans
chemical_list: D001500:BCG Vaccine