Immunosuppressive drugs in rheumatoid arthritis.
D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D001379:Azathioprine / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D003520:Cyclophosphamide / Q000627:therapeutic use
D003520:Cyclophosphamide; D001379:Azathioprine