P6613Is there a difference in outcome in patients undergoing first vs. second line ablation of atrial fibrillation?. (28th August 2018) - Manninger, M; Ebner, J; Zweiker, D; Sieghartsleitner, R; Mastnak, B; Bisping, E; Lercher, P; Riedlbauer, R; Rotman, B; Brussee, H; Scherr, D