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. 2014 Oct 7;3(5):e001277. doi: 10.1161/JAHA.114.001277

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© 2014 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley Blackwell.

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Figure 3. — The Kaplan–Meier curve for the recurrent AF‐free survival after the RFCA of AF. A, The patients with a prolonged PR interval had a poor recurrent AF‐free survival after the RFCA of AF as compared to those with a short PR interval. B, These results were also consistent with the analysis of the patients with a follow‐up of >1 year. AF indicates atrial fibrillation; RFCA, radiofrequency catheter ablation.