1. Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan;
2. Department of Physical Therapy, School of Health Sciences, Tokyo University of Technology, Tokyo, Japan;
3. Department of Healthcare Epidemiology, School of Public Health in the Graduate School of Medicine, Kyoto University, Kyoto, Japan;
4. Department of Orthopedic Surgery, Shiga University of Medical Science, Shiga, Japan;
5. Anshin Hospital, Hyogo, Japan