5Arnett FC,Edworthy SM,Bloch DA,et al.The American Rheumatism Association 1987 revised criteria for the classification of rheumatoid arthritis.Arthritis Rheum,1988,31:315-324.
6Ishikawa H,Ohno O,Hirohata K,et al.Long term result of synovectomy in rheumatoid patients.J Bone Joint Surg(Am),1986,68:198-203.
7Klug S,Wittmann G,Weseloh G.Arthroscopic synovectomy of knee joint in early cases of rheumatoid arthritis:follow up results of a multicenter study.Arthroscopy,2000,16:262-267.