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Mitsuru Atsuta
Dept. of Prosthodontics 11, School of Dentistry, Hokkaido Univ.
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Nobuo Nakabayashi
Division of Organic Materials, Institute of Medical and Dental Engineering, Tokyo Medical and Dental Univ.
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Yataro Kikuchi
Dept. of Prosthodontics II, School of Dentistry, Tokyo Medical and Dental Univ.
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Yoichi Uchiyama
Dept. of Prosthodontics 11, School of Dentistry, Hokkaido Univ.