Antinuclear antibody positive patients should be grouped as a separate category in the classification of juvenile idiopathic arthritis.

Creators: 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.

Others:: 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.

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