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M. TOTSUKA
Department of Bacteriology, Nippon Dental College
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N. MIURA
Department of Bacteriology, Nippon Dental College
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J. SHIIKI
Department of Bacteriology, Nippon Dental College
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A. HANDA
Department of Bacteriology, Nippon Dental College
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K. UI
Department of Bacteriology, Nippon Dental College
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J. KUSACHI
Department of Bacteriology, Nippon Dental College
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Y. HIROKI
Department of Pedodontic, Nippon Dental College