Affiliation: | 1.Department of Head and Neck Surgery, Saitama Prefectural Cancer Center, 780 Komuro, Ina-Machi, Kita-Adachi-Gun, Saitama, 362-0806, Japan ;2.Department of Head and Neck Surgery, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan ;3.Department of Otolaryngology, Head and Neck Surgery, Yamagata University Faculty of Medicine, 1-4-12 Kojirakawa-machi, Yamagata-shi, Yamagata, 990-8560, Japan ;4.Department of Oral Surgery, Saitama Prefectural Cancer Center, 780 Komuro, Ina-Machi, Kita-Adachi-Gun, Saitama, 362-0806, Japan ;5.Department of Gastroenterology, Saitama Prefectural Cancer Center, 780 Komuro, Ina-Machi, Kita-Adachi-Gun, Saitama, 362-0806, Japan ; |