Kousaku Saotome1, 2, Akira Matsushita1, Tomonori Isobe, Eisuke Satou3, Satoru Osuka, Yoshiyuki Ishimori4, Akira Matsumura1, Yoshiyuki Sankai1
1Center for Cybernics Research, University of Tsukuba, Tsukuba, Ibaraki, Japan; 2Tsukuba Medical Center Hospital, Tsukuba, Ibaraki, Japan; 3Kitasato University, Sagamihara, Kanagawa, Japan; 4Ibaraki Prefectural University of Health Sciences, Ami, Ibaraki, Japan
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