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Atrial fibrillation (AF) is associated with endothelial dysfunction. Studies have shown the incidence of cardiovascular events to be greater in patients with persistent AF (PeAF) than paroxysmal AF (PAF).The aim of this study was to investigate whether endothelial dysfunction and the impact of catheter ablation on the endothelial function differs between PAF and PeAF.We prospectively measured the...