1. Division of Rheumatology; Department of Internal Medicine; Seoul National University Hospital; Seoul Korea
2. Division of Rheumatology; Department of Internal Medicine; Seoul St. Mary's Hospital; Seoul Korea
3. Division of Rheumatology; Department of Internal Medicine; Samsung Medical Center; Seoul Korea
4. Division of Rheumatology; Department of Internal Medicine; Inha University Hospital; Incheon Korea
5. Division of Rheumatology; Department of Internal Medicine; Hallym University Sacred Heart Hospital; Anyang Korea
6. Division of Rheumatology; Department of Internal Medicine; Hanyang University Medical Center; Seoul Korea
7. Division of Rheumatology; Department of Internal Medicine; Gachon Medical School Gil Medical Center; Incheon Korea
8. Division of Rheumatology; Department of Internal Medicine; Pusan National University Hospital; Busan Korea
9. Division of Rheumatology; Department of Internal Medicine; Seoul National University Bundang Hospital; Seongnam Korea
10. Division of Rheumatology; Department of Internal Medicine; Yonsei University Severance Hospital; Seoul Korea
11. Division of Rheumatology; Department of Internal Medicine; Eulji University Hospital; Daejeon Korea
12. Rheumatology Department; Faculty of Medicine; Laboratory of Clinical Research and Epidemiology; El Ayachi Hospital; Mohammed V University; Rabat Morocco
13. Department of Molecular Medicine and Biopharmaceutical Sciences; Medical Research Center; Seoul National University; Seoul Korea