1. Heart Rhythm Center, Division of Cardiology, Department of Medicine Taipei Veterans General Hospital Taipei Taiwan
2. Division of Cardiology Taipei Veterans General Hospital Taipei Taiwan
3. Institute of Clinical Medicine, and Cardiovascular Research Institute National Yang Ming Chiao Tung University Taipei Taiwan
4. National Taipei University of Nursing and Health Sciences Taipei Taiwan
5. Cardiovascular Center Taichung Veterans General Hospital Taichung Taiwan