title: Antinuclear antibody-positive patients should be grouped as a separate category in the classification of juvenile idiopathic arthritis.
authors.affiliation: IRCCS G. Gaslini and Università degli Studi di Genova, Genoa, Italy. angeloravelli@ospedale-gaslini.ge.it
authors.forename: Angelo
authors.initials: A
authors.lastname: Ravelli
authors.forename: Giulia C
authors.initials: GC
authors.lastname: Varnier
authors.forename: Sheila
authors.initials: S
authors.lastname: Oliveira
authors.forename: Esteban
authors.initials: E
authors.lastname: Castell
authors.forename: Olga
authors.initials: O
authors.lastname: Arguedas
authors.forename: Alessandra
authors.initials: A
authors.lastname: Magnani
authors.forename: Angela
authors.initials: A
authors.lastname: Pistorio
authors.forename: Nicolino
authors.initials: N
authors.lastname: Ruperto
authors.forename: Silvia
authors.initials: S
authors.lastname: Magni-Manzoni
authors.forename: Roberta
authors.initials: R
authors.lastname: Galasso
authors.forename: Bianca
authors.initials: B
authors.lastname: Lattanzi
authors.forename: Sara
authors.initials: S
authors.lastname: Dalprà
authors.forename: Antonella
authors.initials: A
authors.lastname: Battagliese
authors.forename: Sara
authors.initials: S
authors.lastname: Verazza
authors.forename: Maddalena
authors.initials: M
authors.lastname: Allegra
authors.forename: Alberto
authors.initials: A
authors.lastname: Martini