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Hitoshi Ogino
Osaka University, Dept. of Otolaryngology
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Seishi Asari
Osaka University, the Central Laboratory for Clinical Investigation
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Katsuhiko Kumano
Toyama Chemical Co., Ltd.
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Yasuo Watanabe
Toyama Chemical Co., Ltd.
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Toru Matsunaga
Osaka University, Dept. of Otolaryngology