1. Department of Surgery for Rheumatism, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea.
2. Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea.
3. Institute of Rheumatism, Hanyang University College of Medicine, Seoul, Korea.
4. Life Science R&D Center, SK Chemicals, Seongnam, Korea.