1. Department of Medical Records & Information, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
2. Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
3. Department of Rheumatology and Immunology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
4. Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
5. Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China