1. Department of Rheumatology and Immunology, Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135), Peking University People’s Hospital, Beijing, P. R. China;
2. Department of Neurology, Peking University Shenzhen Hospital, Shenzhen, P. R. China;
3. Peking University Third Hospital, Beijing, P. R. China;
4. Department of Geriatrics, Jilin University Fourth Hospital, Jilin, P. R. China;
5. Department of Rheumatology and Immunology, Xiamen Fifth Hospital, Xiamen, P. R. China