1. Department of Rheumatology and Immunology, Peking University People's Hospital, BeijingChina
2. Department of Rheumatology and Immunology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, HenanChina
3. Department of Rheumatology and Immunology, Affiliated Hospital of North China University of Science and Technology, Tangshan, HebeiChina
4. Department of Pathology, Peking University People’s Hospital, BeijingChina
5. Department of Rheumatology and Immunology, Tengzhou Central People's Hospital, Tengzhou, ShandongChina
6. Department of Clinical LaboratoryPeking University People's Hospital, Beijing, China
7. Department of UltrasoundPeking University People's Hospital, Beijing, China
8. Department of Radiology, Peking University People’s Hospital, Beijing, China
9. Department of Oral and Maxillofacial Surgery, Peking University School of Stomatology, Beijing, China