P1473Long-term efficiency of a novel high density mapping system for ablation of atrial tachycardia. (20th June 2017) - Maury, P.; Champ-Rigot, L.; Marty, L.; Duparc, A.; Rollin, A.; Mondoly, P.; Cardin, C.; Sadron, M.; Monteil, B.; Milliez, P.; Capellino, S.