1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical School, Taipei, Taiwan, Republic of China
2. Graduate Institute of Applied Science and Engineering, Fu-Jen catholic university, New Taipei, Taiwan, Republic of China
3. Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital; and School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
4. Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital; and School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
5. Department of Biochemistry, National Defense Medical Center, Taiwan, Republic of China