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Koji Arai
Department of Dental Surgery, The National Chubu Hospital
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Yasunori Sumi
Department of Dental Surgery, The National Chubu Hospital
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Hiroko Miura
Department of Speech Therapy, School of Health Science, Kyusyu University of Health and Welfare
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Yukihiro Michiwaki
First Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University