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Hiroshi Hidaka
Department of Otorhinolaryngology, Iwaki Kyoritsu General Hospital Department of Otorhinolaryngology-Head and Neck Surgery, Tohoku University School of Medicine
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Takeshi Oshima
Department of Otorhinolaryngology, Iwaki Kyoritsu General Hospital
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Seiji Kakehata
Department of Otorhinolaryngology, Iwaki Kyoritsu General Hospital
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Ken-ichi Watanabe
Department of Otorhinolaryngology, Iwaki Kyoritsu General Hospital
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Masaru Toshima
Department of Otorhinolaryngology, Iwaki Kyoritsu General Hospital
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Hideaki Suzuki
Department of Otorhinolaryngology-Head and Neck Surgery, Tohoku University School of Medicine
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Toshimitsu Kobayashi
Department of Otorhinolaryngology-Head and Neck Surgery, Tohoku University School of Medicine