Rheumatoid arthritis in Maprik, Sepik District, New Guinea.
D000293:Adolescent; D000328:Adult; D001172:Arthritis, Rheumatoid / Q000000981:diagnostic imaging / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009512:New Guinea; D011859:Radiography; D012698:Serologic Tests