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Sho MIYAMOTO
Institute for Medical Research on Rural Welfare. [Japan]
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Hitoshi MIYAKOSHI
Dental Clinic, Tabata Railway Hospital. [Japan]
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Yosao KOSUGI
Dental Clinic, Tabata Railway Hospital. [Japan]
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Rokuro KAGEYAMA
Dental Clinic, Tokyo Railway Hospital. [Japan]
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Shigekatsu KAWABE
Institute for Medical Research on Rural Welfare. [Japan]
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Kazue OKUTSU
Institute for Medical Research on Rural Welfare. [Japan]