1. Department of Internal Medicine, Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
2. Department of Oncology, Hebei General Hospital, Shijiazhuang, Hebei 050000, P.R. China
3. Department of Rheumatism and Immunology, General Hospital, Shijiazhuang, Hebei 050000, P.R. China
4. Hebei Key Laboratory of Metabolic Diseases, General Hospital, Shijiazhuang, Hebei 050000, P.R. China