1. The Hospital of Rheumatic Diseases, Department of Internal Medicine, Hanyang University, Seoul, Korea.
2. Department of Diagnostic Radiology, Hanyang University, Seoul, Korea.
3. Department of Pathology, Hanyang University, Seoul, Korea.
4. Department of Pediatrics, Hanyang University, Seoul, Korea.
5. Hanyang Rheumatism Clinic, Jeonju, Korea.