title: [Rheumatoid arthritis: what to do if methotrexate fails?].
authors: Heike
authors: H
authors: Oberpichler-Schwenk
mesh_terms: D018501:Antirheumatic Agents / Q000627:therapeutic use*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D006801:Humans; D008727:Methotrexate / Q000627:therapeutic use*; D017211:Treatment Failure
chemical_list: D018501:Antirheumatic Agents; D008727:Methotrexate