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Mika Saito
Department of Gerostomatology, Tokyo Metropolitan Geriatric Hospital
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Naoyoshi Ishiyama
Department of Gerostomatology, Tokyo Metropolitan Geriatric Hospital
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Ikuma Watanabe
Department of Prosthodontics, Tokyo Dental College
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Chiyoko Hakuta
Nanbu Health Center, Nakano-ward
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Ikuo Nasu
Department of Dental Public Health, Nihon University School of Dentistry at Matsudo