title: Rheumatology.
authors.affiliation: University of Alabama School of Medicine, Birmingham.
authors.forename: W J
authors.initials: WJ
authors.lastname: Koopman
mesh_terms: D004247:DNA / Q000032:analysis; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis; D008727:Methotrexate / Q000009:adverse effects; D010003:Osteoarthritis / Q000235:genetics; D012219:Rheumatology
chemical_list: D004247:DNA; D008727:Methotrexate