Seropositive versus seronegative rheumatoid arthritis--time for a new definition.
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Kurki
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D001172:Arthritis, Rheumatoid / Q000097:blood / Q000145:classification* / Q000453:epidemiology / Q000276:immunology; D001323:Autoantibodies / Q000097:blood / Q000276:immunology; D001324:Autoantigens / Q000276:immunology; D015415:Biomarkers; D005387:Finland / Q000453:epidemiology; D006801:Humans; D007633:Keratins / Q000276:immunology; D009031:Moscow / Q000453:epidemiology; D011379:Prognosis; D012217:Rheumatoid Factor / Q000097:blood*
D001323:Autoantibodies; D001324:Autoantigens; D015415:Biomarkers; D007633:Keratins; D012217:Rheumatoid Factor