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Masafumi Utsunomiya
Division of Oral Medicine and Pathology, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido Oral Medicine Consultation Clinic, Health Sciences University of Hokkaido Hospital
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Hirofumi Matsuoka
Division of Disease Control and Molecular Epidemiology, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido
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Yoshihiro Abiko
Division of Oral Medicine and Pathology, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido Oral Medicine Consultation Clinic, Health Sciences University of Hokkaido Hospital