1. General Practice Ward/International Medical Center Ward, General Practice Medical Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University , Chengdu 610041, China
2. West China School of Public Health and West China Fourth Hospital, Sichuan University , Chengdu 610041, China
3. Department of Endocrinology and Metabolism, West China Hospital, Sichuan University , Chengdu 610041, China
4. Department of Laboratory Medicine, West China Hospital, Sichuan University , Chengdu 610041, China