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Fumiyo Tamura
The Nippon Dental University Hospital at Tokyo, Clinic for Speech and Swallowing Disorders
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Kaori Tomita
Department of Hygiene and Oral Health, Showa University School of Dentistry
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Tetsuko Okano
Department of Hygiene and Oral Health, Showa University School of Dentistry Dental Association of Ohmori, Ohta Wards
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Miki Mizukami
Dental Clinic, Tokyo Metropolitan Higashiyamato Medical Center Severely Disabled
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Takeshi Kikutani
The Nippon Dental University Hospital at Tokyo, Clinic for Speech and Swallowing Disorders
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Yoshiharu Mukai
Department of Hygiene and Oral Health, Showa University School of Dentistry