Pulmonary Vein Isolation Using a Second‐Generation Cryoballoon in Patients With Paroxysmal Atrial Fibrillation: One‐Year Outcome Using a Single Big‐Balloon 3‐Minute Freeze Technique
1. Cardiology Division, Cardiovascular Center, Tsuchiura Kyodo Hospital, Tsuchiura, Ibaraki, Japan;2. Heart Rhythm Center, Tokyo Medical and Dental University, Tokyo, Japan