1. Department of Nephrology, Baoding No. 1 Central Hospital of Hebei Medical Universtiy, Baoding, Hebei, China
2. Department of Neurology, Baoding No. 1 Central Hospital of Hebei Medical University, Baoding, Hebei, China
3. Department of Rheumatology, Baoding No. 1 Central Hospital of Hebei Medical University, Baoding, Hebei, China