Results of the Thoracoscopic Radiofrequency Epicardial Ablation with a Bipolar Electrode During Longstanding Persistent form of Atrial FibrillationRustem Tuleutaev, Alibek Oshakbayev, Kuat Abzaliyev, Baurzhan Rakishev and Symbat AbzaliyevaE3S Web Conf., 159 (2020) 08007DOI: https://doi.org/10.1051/e3sconf/202015908007