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*Masahiro Egawa
Tokyo Dental College Department of Periodontology Oral Health Research Center
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Masao Yosinari
Tokyo Dental College Oral Health Research Center
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Tetuo Katou
Tokyo Dental College Oral Health Research Center
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Tadashi Miura
Tokyo Dental College Oral Health Research Center
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Satoru Yamada
Tokyo Dental College Department of Periodontology