1. Department of Pathology and Molecular DiagnosticsGraduate School of Medical Sciences, Nagoya City University Nagoya Japan
2. Department of Maxillofacial Surgery, School of DentistryAichi‐Gakuin University Nagoya Japan
3. Department of Anatomic PathologyTokyo Medical University Tokyo Japan
4. Department of PathologyShizuoka General Hospital Shizuoka Japan
5. Department of Diagnostic PathologyFujita Health University Aichi Japan
6. Department of Anatomic Pathology, Graduate of School of Medical ScienceKyushu University Fukuoka Japan
7. Department of Pathology and Laboratory MedicineNagoya University Hospital Nagoya, Japan
8. Department of PathologyNational Hospital Organization Kyushu Cancer Center Fukuoka Japan
9. Department of Otorhinolaryngology, Head and Neck SurgeryNagoya City University Graduate School of Medical Sciences Nagoya Japan
10. Department of Otolaryngology Head and Neck SurgeryTokyo Medical University Tokyo Japan
11. Department of OtolaryngologyEhime University Ehime, Japan
12. Department of OtorhinolaryngologyNagoya University Graduate School of Medicine Nagoya Japan
13. Department of OtorhinolaryngologyFujita Health University Aichi Japan
14. Department of Head and Neck SurgeryAichi Cancer Center Hospital Nagoya Japan
15. Department of Otolaryngology—Head and Neck Surgery, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
16. Division of Head and Neck SurgeryShizuoka Cancer Center Shizuoka Japan
17. Department of Otolaryngology—Head and Neck SurgeryTokai University School of Medicine Kanagawa, Japan
18. Department of Otolaryngology—Head and Neck SurgeryKobe University Graduate School of Medicine Kobe Japan
19. Department of Head and Neck Oncology and SurgeryInternational University of Health and Welfare Tokyo Japan
20. Department of Otorhinolaryngology—Head and Neck SurgeryOsaka Medical College Osaka Japan