1. Taipei Heart Institute and Division of Cardiology, Department of Internal Medicine, Taipei Medical University, Taipei 110, Taiwan
2. Division of Cardiology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan
3. Department of Biomedical Sciences and Engineering, National Central University, Taoyuan City 320, Taiwan
4. Institute of Oral Biology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
5. Division of Cardiology, Taipei Veterans General Hospital, Taipei 112, Taiwan
6. Department of Basic Medical Science, College of Medicine, University of Arizona, Phoenix, AZ 85721, USA
7. Healthcare Information and Management Department, Ming Chuan University, Taoyuan 333, Taiwan