Methotrexate for arthritis.
D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D004305:Dose-Response Relationship, Drug; D006801:Humans; D008099:Liver / Q000201:enzymology; D008727:Methotrexate / Q000008:administration & dosage* / Q000009:adverse effects
D008727:Methotrexate