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.