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Hisashi Fujita
Department of Epidemiology, Tokyo Metropolitan Institute of Gerontology
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Takao Suzuki
Department of Epidemiology, Tokyo Metropolitan Institute of Gerontology
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Naoyoshi Ishiyama
epartment of Gerostomatology, Tokyo Metropolitan Geriatric Hospital
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Hirohiko Hirano
epartment of Gerostomatology, Tokyo Metropolitan Geriatric Hospital
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Ikuma Watanabe
epartment of Gerostomatology, Tokyo Metropolitan Geriatric Hospital