1. Cardiovascular Center, Taichung Veterans General Hospital, Taichung, Taiwan
2. Department of Medicine, Cardiovascular Research Center and Institute of Clinical Medicine, National Yang Ming University School of Medicine, Taipei, Taiwan
3. Department of Medicine, Chung Shan Medical University, Taichung, Taiwan
4. Department of Medicine, China Medical University, Taichung, Taiwan
5. Department of Life Science, Tung-Hai University, Taichung, Taiwan