title: Low dose methotrexate and acute respiratory insufficiency.
authors.forename: A M
authors.initials: AM
authors.lastname: Xavier
authors.forename: R D
authors.initials: RD
authors.lastname: Bertken
mesh_terms: D000208:Acute Disease; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000188:drug therapy; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000008:administration & dosage / Q000009:adverse effects*; D012131:Respiratory Insufficiency / Q000139:chemically induced*
chemical_list: D008727:Methotrexate