Department of Medical Oncology;
Guangdong Medical University Affiliated Longhua Central Hospital;
Department of Internal Medicine;
The University of Hong Kong-Shenzhen Hospital;
Department of Endoscopy and Laser;
State Key Laboratory of Oncology in South China;
Sun Yat-Sen University Cancer Center;
Department of Experimental Research;
State Key Laboratory of Oncology in South China;
Sun Yat-Sen University Cancer Center;
Department of Endoscopy and Laser;
Sun Yat-Sen University Cancer Center;