1. Department of Maxillofacial Surgery, School of Dentistry Aichi Gakuin University Nagoya Japan
2. Department of Pathology and Laboratory Medicine Nagoya University Hospital Nagoya Japan
3. Department of Anatomic Pathology Tokyo Medical University Tokyo Japan
4. Department of Oral and Maxillofacial Surgery Ichinomiya Municipal Hospital Ichinomiya Japan
5. Department of Diagnostic Pathology, Bantane Hospital Fujita Health University School of Medicine Nagoya Japan
6. Department of Oral and Maxillofacial Surgery Nara Medical University Nara Japan
7. Division of Pathology, Department of Diagnostic and Therapeutic Sciences Meikai University, School of Dentistry Saitama Japan
8. Division of Oral Pathology Kyushu Dental University Fukuoka Japan
9. Department of Oral Pathology/Forensic Odontology, School of Dentistry Aichi Gakuin University Nagoya Japan
10. Department of Internal Medicine, School of Dentistry Aichi Gakuin University Nagoya Japan
11. Department of Anatomic Pathology, Graduate School of Medical Sciences Kyushu University Fukuoka Japan
12. Department of Diagnostic Pathology Keiyukai Sapporo Hospital Sapporo Japan
13. Department of Pathology Shizuoka General Hospital Shizuoka Japan
14. Center of Oral Clinical Examination Hiroshima University Hospital Hiroshima Japan
15. Division of Diagnostic Pathology, National Hospital Organization Hokkaido Cancer Center Sapporo Japan
16. Department of Anatomic Pathology Kurashiki Central Hospital Okayama Japan
17. Department of Pathology The Jikei University School of Medicine Tokyo Japan
18. Department of Head and Neck Oncology and Surgery International University of Health and Welfare, Mita Hospital Tokyo Japan
19. Tokuyama University Yamaguchi Japan
20. Department of Diagnostic Pathology Hino Municipal Hospital Hino Japan
21. Faculty of Dentistry, Oral and Craniofacial Sciences King's College London and The WHO Collaborating Centre for Oral Cancer London UK