1. Convergent Research Consortium for Immunologic disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06951, Korea.
2. Division of Rheumatology, Department of Internal Medicine, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05029, Korea.
3. Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul 04401, Korea.