1 Department of Cardiology, National Hospital Organization Yokohama Medical Center, Yokohama, Kanagawa, Japan.
2 Clinical Research Division for Heart Rhythm Management, Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan. Electronic address: satoshi.higuchi.0420@gmail.com.
3 Clinical Research Division for Heart Rhythm Management, Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan.
4 Division of Cardiology, Department of Medicine, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA.
5 Division of Cardiology, Section of Cardiac Electrophysiology, University of California-San Francisco, San Francisco, California, USA.
6 Clinical Research Division for Heart Rhythm Management, Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan. Electronic address: shoda.morio@twmu.ac.jp.