1. State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine Sun Yat‐Sen University Cancer Center Guangzhou 510030 China
2. Department of Liver Surgery Sun Yat‐Sen University Cancer Center Guangzhou 510030 China
3. Department of Gastric Surgery Sun Yat‐Sen University Cancer Center Guangzhou 510030 China
4. Department of Anesthesiology Sun Yat‐sen University Cancer Center Guangzhou 510030 China