[1] Wenzhou Med Univ, Zhejiang Canc Hosp, Postgrad Training Base Alliance, Hangzhou, Peoples R China
[2] Chinese Acad Sci, Zhejiang Canc Hosp, Hangzhou Inst Med HIM, Dept Gastr Surg, Hangzhou, Peoples R China
[3] Zhejiang Canc Hosp, Zhejiang Key Lab Prevent Diag & Therapy Upper Gast, Hangzhou, Peoples R China
[4] Univ Elect Sci & Technol China, Sichuan Canc Hosp & Inst, Sichuan Clin Res Ctr Canc, Dept Gastr Surg,Sichuan Canc Ctr,Affiliated Canc H, Chengdu 610041, Peoples R China