1 Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Division of Cardiology, Department of Medicine, Hualien Tzu Chi Hospital, Hualien, Taiwan. Electronic address: http://www.twitter.com/JoJoChen1988.
2 Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
3 Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Clinical Medicine and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan. Electronic address: marxtaiji@gmail.com.