1 Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
2 Department of Radiation Oncology, Meizhou People's Hospital, Meizhou, China.
3 Department of Respiratory and Critical Care Medicine, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, China.
4 Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China.
5 Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, China.