1. Decision of handicapped condition and welfare policies in the patient with rheumatoid arthritis;Hayashi;RA Ther,1999
2. Assessment of radiological progression in rheumatoid arthritis;Fries;Arthritis Rheum,1986
3. Diagnostic criteria of early rheumatoid arthritis defined by Japanese College of Rheumatology;Yamamoto;The Ryumachi,1994