1. Department of Otolaryngology, and Head & Neck Surgery, Kanazawa University, Kanazawa, Japan;
2. Canon Medical Systems, Ohtawara, Japan;
3. Department of Head and Neck Surgery, Kanazawa Medical University, Uchinada, Japan;
4. Department of Oral and Maxillofacial Surgery, Kanazawa University, Kanazawa, Japan;
5. Department of Radiology, Kanazawa University, Kanazawa, Japan;
6. Division of Pathology, Kanazawa University, Kanazawa, Japan;
7. Department of Biomedical Statistics, Innovative Clinical Research Center, Kanazawa University, Kanazawa, Japan;
8. Department of Laboratory Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan