1. Department of Nephrology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121000, P.R. China
2. Department of Nephrology, Guangan People's Hospital, Guangan, Sichuan 638000, P.R. China
3. Department of Nephrology, Sichuan Provincial People's Hospital, Clinical Research Center for Kidney Diseases, Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, University of Electronic Science and Technology of China, Chengdu, Sichuan 610072, P.R. China