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*Shinichi Sekine
Dept. of Prev. Dent, Osaka Univ. Grad. Sch. of Dent.
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Kosuke Kataoka
Dept. of Prev. Dent, The Univ. of Tokushima
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Ei Hashino
Dept. of Prev. Dent, Osaka Univ. Grad. Sch. of Dent.
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Mio Iwasaki
Dept. of Prev. Dent, Osaka Univ. Grad. Sch. of Dent.
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Muneo Tanaka
Dept. of Prev. Dent, Osaka Univ. Grad. Sch. of Dent.
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Hideki Nagata
Dept. of Prev. Dent, Osaka Univ. Grad. Sch. of Dent.