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Antinuclear antibody-positive patients should be grouped as a separate category in the classification of juvenile idiopathic arthritis.
Ravelli A, Varnier GC, Oliveira S, Castell E, Arguedas O, Magnani A, Pistorio A, Ruperto N, Magni-Manzoni S, Galasso R, Lattanzi B, Dalprà S, Battagliese A, Verazza S, Allegra M, Martini A. Ravelli A, et al. Among authors: arguedas o. Arthritis Rheum. 2011 Jan;63(1):267-75. doi: 10.1002/art.30076. Arthritis Rheum. 2011. PMID: 20936630 Free article.
Predictors of poor response to methotrexate in polyarticular-course juvenile idiopathic arthritis: analysis of the PRINTO methotrexate trial.
Vilca I, Munitis PG, Pistorio A, Ravelli A, Buoncompagni A, Bica B, Campos L, Häfner R, Hofer M, Ozen S, Huemer C, Bae SC, Sztajnbok F, Arguedas O, Foeldvari I, Huppertz HI, Gamir ML, Magnusson B, Dressler F, Uziel Y, van Rossum MA, Hollingworth P, Cawkwell G, Martini A, Ruperto N; Pediatric Rheumatology International Trials Organisation (PRINTO). Vilca I, et al. Among authors: arguedas o. Ann Rheum Dis. 2010 Aug;69(8):1479-83. doi: 10.1136/ard.2009.120840. Epub 2010 Jun 4. Ann Rheum Dis. 2010. PMID: 20525842 Free article. Clinical Trial.