1. Division of Cardiology; Taipei Veterans General Hospital; Taipei Taiwan
2. Faculty of Medicine, Institute of Clinical Medicine, and Cardiovascular Research Institute; National Yang-Ming University; Taipei Taiwan
3. Cardiovascular Center; Taichung Veterans General Hospital; Taichung Taiwan
4. Cardiology; National Yang Ming University Hospital; I-Lan Taiwan
5. Department of Biomedical Engineering; Hungkuang University; Taichung Taiwan