525Correlation of left atrial low voltage and fractionation substrate between sinus rhythm and atrial fibrillation: high density mapping study in persistent AF. (19th March 2018) - Chen, J; Jadidi, A; Moreno-Weidmann, Z; Mueller-Edenborn, B; Lehrmann, H; Markstein, V; Allgeier, J; Weber, R; Trenk, D; Arentz, T