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Isao Matsuno
Department of orthodontics, Hokkaido University School of Dentistry
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Kouichi Satoh
Department of orthodontics, Hokkaido University School of Dentistry
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M. A. Sikder
Department of orthodontics, Hokkaido University School of Dentistry
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Shinji Nakamura
Department of orthodontics, Hokkaido University School of Dentistry
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Hisanori Komatsu
Department of operative dentistry, Hokkaido University School of Dentistry