Affiliation: | 1.Department of Head and Neck Medical Oncology, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa-shi, Chiba, 277-8577, Japan ;2.Department of Radiation Oncology and Particle Therapy, National Cancer Center Hospital East, Kashiwa, Japan ;3.Department of Head and Neck Surgery, National Cancer Center Hospital East, Kashiwa, Japan ;4.Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan ;5.Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan ;6.Department of Otorhinolaryngology-Head and Neck Surgery, Tokyo Medical University, Shinjuku, Tokyo, Japan ; |