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Tetsuyo ODAJIMA
Department of Pathology, Sapporo Medical College
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Kiyohide FUJITA
Department of Oral Surgery, School of Medicine, Yokohama City University
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Tohru KAKU
Department of Pathology, Sapporo Medical College
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Tomizoh OKUYAMA
Department of Oral Pathology, School of Dentistry, Higashi Nippon Gakuen University