1. School of Medicine, Shandong University, Jinan, Shandong, China
2. Department of Geriatrics, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, China
3. Department of MEC, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, China
4. Department of Nephrology, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, China
5. Department of Endocrinology, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, China