1. Division of Endocrinology and Metabolism; Department of Internal Medicine; Puli Branch of Taichung Veterans General Hospital; Nantou Taiwan
2. Institute of Public Health and Community Medicine Research Center; National Yang-Ming University; Taipei Taiwan
3. Department of Education and Research; Taipei City Hospital; Taipei Taiwan
4. Department of Medical Research; Taichung Veterans General Hospital; Taichung Taiwan
5. Department of Family Medicine; Puli Branch of Taichung Veterans General Hospital; Nantou Taiwan
6. National Taichung University of Science and Technology; Taichung Taiwan