1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
2. Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
3. Department of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
4. Department of Medicine, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
5. Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan
6. Cardiovascular Center, Taichung Veterans General Hospital, Taichung, Taiwan
7. Institute of Medical Technology, College of Life Sciences, National Chung-Hsing University, Taichung, Taiwan