1. Department of Nephrology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, Sichuan 400010, P.R. China
2. Department of Endocrinology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, Sichuan 400010, P.R. China
3. Department of Outpatient, Nanan People's Hospital of Chongqing, Chongqing, Sichuan 400060, P.R. China