Department of Colorectal Surgery;
National Cancer Center/Cancer Hospital;
Chinese Academy of Medical Sciences and Peking Union Medical College;
Beijing 100021;
China;
Department of General Surgery;
China-Japan Friendship Hospital;
Beijing 100029;
China;
Department of General Surgery;
Beijing Hospital;
Beijing 100730;
China;
Department of Orthopedics;
Lanzhou University Second Hospital;
Lanzhou 730030;
China;
Department of Colorectal Surgery;
University of Chinese Academy of Sciences Zhejiang Cancer Hospital;
Hangzhou 310022;
China;
Colon; Rectum; Neuroendocrine; Neoplasm; Metastasis; Prognosis;