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Shigeo Hasegawa
Dept. of Prosthetic Dentistry, School of Dentistry, Tokyo Medical and Dental University
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Akihiro Mayanagi
Dept. of Prosthetic Dentistry, School of Dentistry, Tokyo Medical and Dental University
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Izumi Arai
Dept. of Prosthetic Dentistry, School of Dentistry, Tokyo Medical and Dental University