1. Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
2. Department of Medical Laboratory, The First Hospital of Jilin University, Changchun, China
3. Department of Clinical Laboratory, Beijing Anzhen Hospital, Capital Medical University, Beijing, China