Sun Yat-sen University (SYSU) - State Key Laboratory of Oncology in South China, Chinese Academy of Sciences (CAS) - CAS Key Laboratory of Molecular Imaging, Chinese Academy of Sciences (CAS) - CAS Key Laboratory of Molecular Imaging, Fudan University - Department of Radiation Oncology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Department of Radiation Oncology, Southern Medical University - Department of Radiation Oncology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Department of Radiation Oncology, Sun Yat-sen University (SYSU) - State Key Laboratory of Oncology in South China, Sun Yat-sen University (SYSU) - Department of Radiology, Sun Yat-sen University (SYSU) - Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University (SYSU) - Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University (SYSU) - Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University (SYSU) - State Key Laboratory of Oncology in South China, Sun Yat-sen University (SYSU) - Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University (SYSU) - Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University (SYSU) - State Key Laboratory of Oncology in South China, Sun Yat-sen University (SYSU) - State Key Laboratory of Oncology in South China, Sun Yat-sen University (SYSU) - State Key Laboratory of Oncology in South China, Sun Yat-sen University (SYSU) - State Key Laboratory of Oncology in South China, Fudan University - Department of Radiation Oncology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Department of Radiation Oncology, Southern Medical University - Department of Radiation Oncology, Sun Yat-sen University (SYSU) - State Key Laboratory of Oncology in South China, Sun Yat-sen University (SYSU) - Zhongshan School of Medicine, Sun Yat-sen University (SYSU) - Zhongshan School of Medicine, Chinese Academy of Sciences (CAS) - CAS Key Laboratory of Molecular Imaging, Chinese Academy of Sciences (CAS) - CAS Key Laboratory of Molecular Imaging, Fudan University - Department of Radiation Oncology, Southern Medical University - Department of Radiation Oncology, Sun Yat-sen University (SYSU) - Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Beihang University (BUAA) and Sun Yat-sen University (SYSU) - Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy