1. State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
2. Guangdong Esophageal Cancer Institute, Guangzhou 510060, China
3. Department of Thoracic Oncology, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
4. Department of Thoracic Surgery, Cancer Hospital of Shantou University Medical College, Shantou 515041, China
5. Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou 510060, China