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Hiroshi KOBAYASHI
Department of Dentistry, Ichikawa Hospital, Tokyo Dental College
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Yasushi KAWASHIMA
Department of Dentistry, Ichikawa Hospital, Tokyo Dental College
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Yoshio YAMAZAKI
Department of Otorhinolaryngology, Ichikawa Hospital, Tokyo Dental College
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Kazuya SHIMADA
Department of Otorhinolaryngology, Ichikawa Hospital, Tokyo Dental College