1 Department of Advanced Cardiovascular Therapeutics, Chiba University Graduate School of Medicine, Chiba, Japan. Electronic address: yuusukondou-circ@umin.ac.jp.
2 Department of Advanced Cardiovascular Therapeutics, Chiba University Graduate School of Medicine, Chiba, Japan; Department of Arrhythmia, Koseika Takeda Hospital, Kyoto, Japan.
3 Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.