1 Department of Pancreatic and Gastric Surgical Oncology, National Cancer Center/ National Clinical Research for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
2 Department of Pancreatic and Gastric Surgical Oncology, National Cancer Center/ National Clinical Research for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China. Electronic address: [email protected].