Correction to: Impact of smoking habit on adult-onset Still's disease prognosis, findings from a multicentre observational study.

Ruscitti, P; Di Cola, I; Berardicurti, O; Conforti, A; Iacono, D; Pantano, I; Rozza, G; Rossi, S; De Stefano, L; Balduzzi, S; Vitale, A; Caso, F; Costa, L; Prete, M; Navarini, L; Atzeni, F; Guggino, G; Perosa, F; Cantarini, L; Frediani, B; Montecucco, C; Ciccia, F; Giacomelli, R; Cipriani, P.