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Tatsuya Ueno
Department of Neurology, Aomori Prefectural Central Hospital, Japan
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Haruo Nishijima
Department of Neurology, Aomori Prefectural Central Hospital, Japan
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Junji Ito
Department of Orthopaedic Surgery, Aomori Prefectural Central Hospital, Japan
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Masahiko Tomiyama
Department of Neurology, Aomori Prefectural Central Hospital, Japan