1 Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital , Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China . 2 Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), The VIPII Gastrointestinal Cancer Division of Medical Department, Peking University Cancer Hospital and Institute , Beijing, China . 3 Department of Thyroid and Neck Oncology, Tianjin Medical University Cancer Institute and Hospital , Tianjin, China . 4 Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, China . 5 Department of Head and Neck Surgery, Liaoning Cancer Hospital and Institute , Shenyang, China . 6 Department of Head and Neck Surgery, Jiangsu Cancer Hospital , Nanjing, China . 7 Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center , Guangzhou, China . 8 Department of Thyroid and Breast Surgery, Gansu Provincial Cancer Hospital , Lanzhou, China . 9 Department of Head and Neck Surgery, First Affiliated Hospital of Fujian Medical University , Fuzhou, China .