| Affiliation: | 1. Department of Clinical Motor System Medicine, 22nd Century Medical & Research Center, Graduate School of Medicine, University of Tokyo, , Tokyo;2. Department of Joint Disease Research, 22nd Century Medical & Research Center, Graduate School of Medicine, University of Tokyo, , Tokyo;3. Department of Sensory & Motor System Medicine, Graduate School of Medicine, University of Tokyo, , Tokyo;4. Department of Orthopaedic Surgery, Tokyo Metropolitan Geriatric Hospital, , Tokyo;5. Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology, , Tokyo;6. Research Institute, National Center for Geriatrics and Gerontology, , Aichi;7. National Rehabilitation Center for Persons with Disabilities, , Saitama, Japan |
