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Koichiro Yamada
Department of Otorhinolaryngology, Head and Neck Surgery, Osaka Red-Cross Hospital
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Shinzo Tanaka
Department of Otorhinolaryngology, Head and Neck Surgery, Osaka Red-Cross Hospital
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Yasuyuki Hiratsuka
Department of Otorhinolaryngology, Head and Neck Surgery, Osaka Red-Cross Hospital
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Yoshiki Watanabe
Department of Otorhinolaryngology, Head and Neck Surgery, Osaka Red-Cross Hospital