title: Methotrexate saves lives: a pearl of observational research.
authors.forename: Robert B M
authors.initials: RB
authors.lastname: Landewé
mesh_terms: D018501:Antirheumatic Agents / Q000627:therapeutic use*; D001172:Arthritis, Rheumatoid / Q000401:mortality*; D005260:Female; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000627:therapeutic use*
chemical_list: D018501:Antirheumatic Agents; D008727:Methotrexate