1. Department of Geriatric Endocrinology, University of Electronic Science and Technology, Sichuan Academy of Sciences & Sichuan Provincial People’s Hospital, Chengdu, Sichuan, P.R. China
2. The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, P.R. China
3. Department of Nephrology and Endocrinology, Xindu People’s Hospital, Chengdu, Sichuan, P.R. China