1. Department of Medical Research; Taichung Veterans General Hospital; Taichung Taiwan
2. Division of Endocrinology and Metabolism; Department of Internal Medicine; Taichung Veterans General Hospital; Taichung Taiwan
3. School of Medicine; Chung Shan Medical University; Taichung Taiwan
4. School of Medicine; National Yang-Ming University; Taipei Taiwan
5. Institute of Medical Technology; National Chung-Hsing University; Taichung Taiwan