1. Cardiovascular Center, Taichung Veterans General Hospital, Taichung, Taiwan;
2. School of Medicine, National Yang Ming University, Taipei, Taiwan;
3. Department of Medicine, China Medical University, Taichung, Taiwan;
4. Division of Endocrinology and Metabolism, Department of Medicine, Taichung Veterans General Hospital, Taichung, Taiwan;
5. Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan;
6. School of Medicine, National Defense Medical Center, Taipei, Taiwan;
7. Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan;
8. Tung-Hai University, Taichung, Taiwan