1. Department of Pathology and Molecular Diagnostics Graduate School of Medical Sciences Nagoya City University Nagoya Japan
2. Department of Otolaryngology‐Head and Neck Surgery Kobe University Graduate School of Medicine Kobe Japan
3. Department of Maxillofacial Surgery School of Dentistry Aichi‐Gakuin University Aichi Japan
4. Department of Anatomic Pathology Tokyo Medical University School of Medicine Tokyo Japan
5. Department of Pathology Shizuoka General Hospital Shizuoka Japan
6. Department of Pathology and Laboratory Medicine Nagoya University Hospital Nagoya Japan
7. Department of Diagnostic Pathology Fujita Health UniversitySchool of Medicine Aichi Japan
8. Department of Pathology National Hospital Organization Kyushu Cancer Center Fukuoka Japan
9. Department of Anatomic Pathology Graduate of School of Medical Science Kyushu University Fukuoka Japan
10. Department of Otolaryngology – Head and Neck Surgery Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan
11. Department of Head and Neck Oncology and Surgery International University of Health and WelfareMita Hospital Tokyo Japan
12. Department of Otorhinolaryngology Head and Neck Surgery Tokyo Medical University Tokyo Japan
13. Department of Otolaryngology‐Head and Neck Surgery Tokai University School of Medicine Kanagawa Japan
14. Division of Head and Neck Surgery Shizuoka Cancer Center Shizuoka Japan
15. Department of Otorhinolaryngology Aichi Medical University Aichi Japan
16. Department of Otorhinolaryngology, Head and Neck Surgery Nagoya City University Graduate School of Medical Sciences Nagoya Japan
17. Department of Otorhinolaryngology Fujita Health University Okazaki Medical Center Aichi Japan
18. Department of Head and Neck Surgery Aichi Cancer Center Hospital Nagoya Japan
19. Department of Otorhinolaryngology‐Head and Neck Surgery Osaka Medical College Osaka Japan
20. Department of Otolaryngology Ehime UniversitySchool of Medicine Ehime Japan