1 Department of Abdominal Surgical Oncology, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS and PUMC), No. 17, Panjiayuan Nanli, Beijing, 100021, People's Republic of China.
2 Department of Interventional Therapies, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS and PUMC), No. 17, Panjiayuan Nanli, Beijing, 100021, People's Republic of China.
3 Department of Cancer Epidemiology, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS and PUMC), No. 17, Panjiayuan Nanli, Beijing, 100021, People's Republic of China.
4 Department of Abdominal Surgical Oncology, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS and PUMC), No. 17, Panjiayuan Nanli, Beijing, 100021, People's Republic of China. caijianqiang@cicams.ac.cn.