1. Department of Rehabilitation, Hamamatsu University School of Medicine, University Hospital: 1-20-1 Handayama, Higashi-ku, Hamamatsu-shi, Shizuoka 431-3192, Japan
2. Department of Physical Therapy, School of Health Sciences at Narita, International University of Health and Welfare, Japan
3. Kobori Orthopedic Clinic, Japan