| Affiliation: | 1. Department of Public Health, Wakayama Medical University School of Medicine, Wakayama, Japan;2. Department of Joint Disease Research, 22nd Century Medical and Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan;3. Department of Clinical Motor System Medicine, 22nd Century Medical and Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan;4. Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan;5. JCHO Tokyo Shinjuku Medical Center, Tokyo, Japan;6. National Rehabilitation Center for Persons with Disabilities, Saitama, Japan. |
