[1] Sun Yat Sen Univ, Affiliated Hosp 6, Dept Oncol, Guangzhou, Peoples R China
[2] Huazhong Univ Sci & Technol, Union Hosp, Tongji Med Coll, Ctr Canc, Wuhan, Peoples R China
[3] Yunnan Canc Hosp, Dept Gastroenterol & Internal Oncol, Kunming, Yunnan, Peoples R China
[4] Hunan Canc Hosp, Affiliated Canc Hosp, Dept Gastroenterol & Urol, Xiangya Sch Med, Changsha, Peoples R China
[5] First Peoples Hosp Foshan, Dept Gastrointestinal Oncol, Foshan, Peoples R China
[6] Akeso Biopharma Inc, Dept Med, Zhongshan, Peoples R China