1. Division of Rheumatology, Department of Internal Medicine, Keimyung University Donsan Medical Center, Daegu, Korea.
2. Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea.
3. Department of Radiology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea.
4. Department of Pathology, Hanyang University Hospital, Seoul, Korea.
5. Division of Endoclinology, Department of Internal Medicine, Hanyang University Hospital, Seoul, Korea.
6. Department of Otolaryngology-Head and Neck Surgery, Hanyang University Hospital, Seoul, Korea.
7. YTS Rheumatology Clinic, Seoul, Korea.