P279Cryoablation for paroxysmal and persistent AF in patients with structural heart disease. Clinical outcomes from multicenter observational project. (19th March 2018) - Perego, G B; Iacopino, S; Arena, G; Verlato, R; Pieragnoli, P; Curnis, A; Allocca, G; Pepi, P; Tondo, C; Sciarra, L; Stabile, G; Padeletti, L