1. Division of Rheumatology, Department of Medicine, Daejeon Rheumatoid and Degenerative Arthritis Center, Chungnam National University Hospital, Daejeon, Korea.
2. Department of Pathology, Wonkwang University School of Medicine, Iksan, Korea.
3. Division of Rheumatology, Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea.
4. Department of Medicine, Eulji Medi-Bio Research Institute, Eulji University, Daejeon, Korea.
5. School of Biological Sciences, University of Ulsan, Ulsan, Korea.