1. Department of Rheumatology, Affiliated Hospital of Inner Mongolia Medical University, Huhehaote 010059, China
2. Department of Nephrology and Rheumatology, Hohhot First Hospital, Huhehaote 010000, China
3. Inner Mongolia Medical University, Huhehaote 010059, China
4. Department of Nephrology, Affiliated Hospital of Inner Mongolia Medical University, Huhehaote 010059, China