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Yoshiaki SUGIYAMA
Department of Neurosurgery, Toyama Prefectural Hospital
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Noboru MIYAZAWA
Department of Neurosugery, Brain Research Institute, Niigata University
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Yukio KOBAYASHI
Department of Neurosugery, Brain Research Institute, Niigata University
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Tadashi TSUCHIDA
Department of Neurosugery, Brain Research Institute, Niigata University