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Jun ISHIKAWA
Department of Periodontology, School of Dentistry, Hokkaido Univèrsity
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Hiroshi KATO
Department of Periodontology, School of Dentistry, Hokkaido Univèrsity
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Fumihiko SATO
Department of Periodontology, School of Dentistry, Hokkaido Univèrsity
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Takeshi OGURI
Department of Periodontology, School of Dentistry, Hokkaido Univèrsity
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Kazuhiko HAYASHI
Department of Periodontology, School of Dentistry, Hokkaido Univèrsity
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Hisayuki SASAKI
Department of Periodontology, School of Dentistry, Hokkaido Univèrsity
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Hiroshi TAKEDA
Department of Periodontology, School of Dentistry, Hokkaido Univèrsity