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A number of conclusions have been derived from this study: 1) All definitions of the 1973 criteria for classification of juvenile rheumatoid arthritis should be retained. 2) The addition of onset types to the 1976 revision of the criteria has been validated. 3) The course of the disease after the onset period of 6 months is as important to the outcome of a group of children as is the onset type. 4) The current classification should be broadened to include the course subtypes.<\/jats:p>","DOI":"10.1002\/art.1780290216","type":"journal-article","created":{"date-parts":[[2007,2,14]],"date-time":"2007-02-14T21:15:46Z","timestamp":1171487746000},"page":"274-281","source":"Crossref","is-referenced-by-count":345,"title":["A study of classification criteria for a diagnosis of juvenile rheumatoid arthritis"],"prefix":"10.1002","volume":"29","author":[{"given":"J. T.","family":"Cassidy","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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