Affiliation: | (1) Department of Rheumatic diseases, Tong-inchon Ghil Hospital, Inchon, KR;(2) Department of Internal Medicine, Hanyang University College of Medicine, Seoul, KR;(3) Department of Rheumatology, Dong-eui Medical Center, Pusan, Korea, KR;(4) Department of Dermatology, Hanyang University College of Medicine, Seoul, KR;(5) Department of Pathology, Hanyang University College of Medicine, Seoul, KR;(6) Department of Clinical Pathology, Hanyang University College of Medicine, Seoul, KR |