The American Rheumatism Association 1987 revised criteria for the classification of rheumatoid arthritis. - Arnett,F.C.; Edworthy,S.M.; Bloch,D.A.; McShane,D.J.; Fries,J.F.; Cooper,N.S.; Healey,L.A.; Kaplan,S.R.; Liang,M.H.; Luthra,H.S. (Arthritis Rheum, 1988)