1. Department of Rheumatology, the Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
2. Department of Rheumatology, Shanxi Li Xiaofeng Medical Groups, Taiyuan, Shanxi, China
3. Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
4. Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, China