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*Hiroshi Masunaga
Department of Periodontology, Nihon University School of Dentistry at Matsudo Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo
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Kenjiro Ohashi
Department of Periodontology, Nihon University School of Dentistry at Matsudo
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Wataru Tsutae
Kishimoto Clinical Laboratory, Inc.
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Yorimasa Ogata
Department of Periodontology, Nihon University School of Dentistry at Matsudo Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo