title: Nocardiosis associated with low dose methotrexate for rheumatoid arthritis.
authors.forename: J M
authors.initials: JM
authors.lastname: Keegan
authors.forename: J W
authors.initials: JW
authors.lastname: Byrd
mesh_terms: D000284:Administration, Oral; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000008:administration & dosage / Q000009:adverse effects*; D008875:Middle Aged; D009617:Nocardia Infections / Q000139:chemically induced*; D009894:Opportunistic Infections / Q000139:chemically induced*
chemical_list: D008727:Methotrexate