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Toshitaka Kaketa
Dept. of Prosthetic Dent., School of Dentistry, Iwate Medical Univ.
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Kenji Osawa
Dept. of Prosthetic Dent., School of Dentistry, Iwate Medical Univ.
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Masatoshi Umehara
Dept. of Prosthetic Dent., School of Dentistry, Iwate Medical Univ.
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Jen-ming Chen
Dept. of Prosthetic Dent., School of Dentistry, Iwate Medical Univ.