1. Department of Physical Therapy, Tokoha University, Shizuoka, Japan
2. Department of Physical Therapy, Tsukuba International University, Tsuchiura, Japan
3. Department of Physical Therapy, Ibaraki Prefectural University of Health Sciences Hospital, Inashiki-Gun, Japan
4. Department of Neurology, Ibaraki Prefectural University of Health Sciences Hospital, Inashiki-Gun, Japan