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Chikao IZUMI
Neurosurgical Clinic, 2nd Tokyo National Hospital
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Masayuki WATANABE
Surgical Clinic, 2nd Tokyo National Hospital
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Yonosuke YAMAZAKI
Div. of Anesthesiology, 2nd Tokyo National Hospital
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Eiichi SUGAYA
1st Dept. of Physiology, Kanagawa Dental College
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Yoshio KARAHASHI
1st Dept. of Physiology, Kanagawa Dental College