1. Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University Changwon Hospital, Gyeongsang National University College of Medicine, Jinju, Korea.
2. Department of Dermatology, Gyeongsang National University Changwon Hospital, Changwon, Korea.
3. Division of Rheumatology, Department of Internal Medicine, Pusan National University Hospital, Pusan National University School of Medicne, Busan, Korea.