1. Division of Rheumatology Department of Internal Medicine Bucheon St. Mary's Hospital College of medicine The Catholic University of Korea Seoul South Korea
2. Department of Internal Medicine Korea Advanced Institute of Science and Technology Clinic Daejeon South Korea
3. Division of Rheumatology Department of Internal Medicine Pusan National University Hospital Pusan National University School of Medicine Busan South Korea
4. Biomedical Research Institute Pusan National University Hospital Busan South Korea
5. Division of Rheumatology Department of Internal Medicine Kosin University College of Medicine Busan South Korea
6. Division of Rheumatology Department of Internal Medicine Gyeongsang National Universitiy Changwon Hospital Gyeongsang National University School of Medicine Jinju South Korea