title: Methotrexate, pneumonitis, and infection.
authors.forename: P J
authors.initials: PJ
authors.lastname: Kerstens
authors.forename: J W
authors.initials: JW
authors.lastname: Van Loenhout
authors.forename: A M
authors.initials: AM
authors.lastname: Boerbooms
authors.forename: L B
authors.initials: LB
authors.lastname: Van De Putte
mesh_terms: D004334:Drug Administration Schedule; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000009:adverse effects*; D008875:Middle Aged; D011014:Pneumonia / Q000139:chemically induced*
chemical_list: D008727:Methotrexate