1. Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
2. Department of Control for Rheumatic Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
3. Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
4. Department of Orthopaedic Surgery, Gifu University Graduate School of Medicine, Gifu, Japan