| Affiliation: | 1. Department of Oncology Clinical Development, Gunma University Graduate School of Medicine, Gunma, JapanKyoichi Kaira, Minoru Toyoda, and Akira Shimizu contributed equally to this work.;2. Department of Respiratory Medicine, Gunma Prefectural Cancer Center, Gunma, Japan;3. Department of Otolaryngology – Head and Neck Surgery, Gunma University Graduate School of Medicine, Gunma, Japan;4. Department of Head and Neck Surgery, Gunma Prefectural Cancer Center, Gunma, Japan;5. Department of Pathology and Clinical Laboratories, Gunma Prefectural Cancer Center, Gunma, Japan;6. Department of Oncology Clinical Development, Gunma University Graduate School of Medicine, Gunma, Japan |
