[Clinical similarity and difference of seropositive and seronegative rheumatoid arthritis].
D000293:Adolescent; D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000175:diagnosis* / Q000235:genetics; D006801:Humans; D008875:Middle Aged; D012189:Retrospective Studies; D012217:Rheumatoid Factor / Q000032:analysis
D012217:Rheumatoid Factor
Izuchenie klinicheskogo skhodstva i razlichiia seropozitivnogo i seronegativnogo revmatoidnogo artrita.