1. Department of Physical Therapy, Human Health Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan.
2. Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan.
3. Department for the Control of Rheumatic Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan.
4. Department of Medical Informatics, Kyoto University Hospital, Kyoto, Japan.
5. NTT Cyber Solutions Laboratories, Kanagawa, Japan.