1. Department of Medical Oncology; The Third Affiliated Hospital, Sun Yat-sen University; Guangzhou China
2. Institute of Cancer Stem Cell; Dalian Medical University; Dalian China
3. State Key Laboratory of Oncology in Southern China; Cancer Center, Sun Yat-sen University; Guangzhou China
4. Department of Pathology; Gastrointestinal Institute, The Sixth Affiliated Hospital, Sun Yat-sen University; Guangzhou China
5. Department of Otorhinolaryngology; The First Affiliated Hospital of Zhengzhou University; Zhengzhou China
6. Department of Nasopharyngeal Carcinoma; Cancer Center of Sun Yat-sen University; Guangzhou China
7. Department of Pathology; Cancer Center of Sun Yat-sen University; Guangzhou China
8. Clinical Trials Center; Cancer Center of Sun Yat-sen University; Guangzhou China