title: The epidemiology of rheumatoid arthritis.
authors.affiliation: Lillehammer Sanitetsforenings Revmatismesykehus, Lillehammer, Norway.
authors.forename: J T
authors.initials: JT
authors.lastname: Gran
mesh_terms: D001172:Arthritis, Rheumatoid / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality / Q000503:physiopathology; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D011379:Prognosis