[1] Beijing Canc Hosp, Gastrointestinal Tumor Ctr Ward, Beijing, Peoples R China
[2] Gansu Wuwei Tumour Hosp, Dept Gastrointestinal Surg, Wuwei, Peoples R China
[3] Yunnan Canc Hosp, Gastr & Small Bowel Surg, Kunming, Yunnan, Peoples R China
[4] Shandong Tumour Hosp, Dept Gastroenterol, Jinan, Peoples R China
[5] Xiamen Univ, Affiliated Hosp 1, Dept Gastrointestinal Surg, Xiamen, Peoples R China
[6] Changzhi Peoples Hosp, Dept Gastrointestinal Surg, Changzhi, Peoples R China
[7] Harbin Med Univ Canc Hosp, Dept Gastroenterol, Haerbin, Peoples R China
[8] Fujian Canc Hosp, Dept Gastrointestinal Surg, Fuzhou, Peoples R China
[9] Sichuan Canc Hosp, Dept Gastrointestinal Surg, Chengdu, Peoples R China
[10] Southern Med Univ, Nanfang Hosp, Gen Surg, Guangzhou, Peoples R China
[11] Guangdong Gen Hosp, Dept Gastrointestinal Surg, Guangzhou, Peoples R China
[12] Henan Canc Hosp, Gen Surg, Zhengzhou, Peoples R China
[13] RemeGen Co Ltd, Med Oncol, Yantai, Peoples R China
[14] RemeGen Co Ltd, Biostat, Yantai, Peoples R China
[15] Tongji Univ, Sch Life Sci & Technol, Shanghai, Peoples R China