1. Department of Immunology; Shandong University School of Medicine; Jinan China
2. Internal Medicine department ward 19; Fuding Hospital; Fuding China
3. Department of Rheumatism; Qilu Hospital Affiliated to Shandong University; Jinan China
4. Department of Quality Control; Jinan Blood Centre of Shandong Province; Jinan China
5. Medical Research and Laboratory Diagnostic Center; Jinan Central Hospital affiliated to Shandong University; Jinan China