1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Changhua Christian Hospital, Changhua, Taiwan
2. Department of Healthcare Administration, Asia University, Wufeng, Taiwan
3. Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, Taiwan
4. School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
5. Internal Medicine Research Center, Changhua Christian Hospital, Changhua, Taiwan
6. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan