740Cryoballoon ablation in early persistent atrial fibrillation patients: single procedure outcomes following pulmonary vein isolation in the prospective multicenter CRYO4PERSISTENT AF Study. (19th March 2018) - Boveda, S; Fehske, W; Metzner, A; Chun, KRJ; Goehl, K; Noelker, G; Deharo, J C; Andrikopoulos, G; Dahme, T; Lellouche, N; Defaye, P