title: Prevalence of rheumatoid arthritis in rural Germany.
mesh_terms: D000328:Adult; D001172:Arthritis, Rheumatoid / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000276:immunology; D005260:Female; D005860:Germany, West; D006386:Hemagglutination Tests; D006801:Humans; D008297:Male; D011859:Radiography; D012217:Rheumatoid Factor / Q000032:analysis; D012424:Rural Population
chemical_list: D012217:Rheumatoid Factor