1. Department of Geriatrics, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China , Chengdu , China
2. Department of Geriatrics, Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital , Chengdu 610072 , China
3. Center of Diabetes Mellitus, School of Medicine, University of Electronic Science and Technology of China, Chengdu , Sichuan 610000 , People’s Republic of China
4. Department of Endocrinology, The Fifth People’s Hospital of Chengdu , Chengdu 611130 , People’s Republic of China