Institution: | 1.Department of Rheumatology and BK21 Division of Cell Transformation and Restoration, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-gu, Suwon 443-380, Korea;2.Division of Rheumatology, Department of Internal Medicine, Department of Medical Sciences, Yonsei University College of Medicine, Seoul, Korea;3.Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea |