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Hiromichi Tsuru
Dept. of Prosthetic Dentistry, School of Dentistry, Hiroshima Univ.
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Tooru Nygasawa
Dept. of Prosthetic Dentistry, School of Dentistry, Hiroshima Univ.
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Takashi Sato
Dept. of Prosthetic Dentistry, School of Dentistry, Hiroshima Univ.
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Junichi Kawamura
Dept. of Prosthetic Dentistry, School of Dentistry, Hiroshima Univ.