1. Department of Thoracic Surgery; Sun Yat-sen University Cancer Center; Guangzhou China
2. State Key Laboratory of Oncology in South China; Guangzhou China
3. Department of Radiation Oncology; The Fifth Affiliated Hospital of Sun Yat-sen University; Zhuhai China
4. Department of Anatomy and Neurobiology, Zhongshan School of Medicine; Sun Yat-sen University; Guangzhou China