1. Department of Internal Medicine, Inje University Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
2. Departments of Radiology Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
3. Departments of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
4. Department of Forensic Medicine, Yonsei University College of Medicine, Seoul, Korea
5. Department of Preventive Medicine, Ajou University School of Medicine, Suwon, Korea