title: Methotrexate: the gold standard without standardisation.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Kay
authors.forename: Rene
authors.initials: R
authors.lastname: Westhovens
mesh_terms: D018501:Antirheumatic Agents / Q000627:therapeutic use*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D006801:Humans; D008727:Methotrexate / Q000627:therapeutic use*
chemical_list: D018501:Antirheumatic Agents; D008727:Methotrexate