1. Division of Rheumatology, Department of Internal Medicine, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Republic of Korea
2. Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
3. Division of Rheumatology, Department of Internal Medicine, Kosin University College of Medicine, Busan, Republic of Korea
4. Division of Rheumatology, Department of Internal Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
5. Department of Microbiology and Immunology, Pusan National University School of Medicine, Yangsan, Republic of Korea