[1] Fudan Univ, Dept Pancreas Surg, Shanghai Canc Ctr, Shanghai, Peoples R China
[2] Sun Yat Sen Univ, Affiliated Hosp 1, Dept Gastroenterol, Guangzhou, Guangdong, Peoples R China
[3] Sun Yat Sen Univ, Sun Yat Sen Mem Hosp, Dept Biliary Pancreat Surg, Guangzhou, Guangdong, Peoples R China
[4] China Japan Friendship Hosp, Dept Tradit Chinese Med Oncol, Beijing, Peoples R China
[5] Peking Univ Canc Hosp, Dept Gastroenterol Oncol, Beijing, Peoples R China
[6] Fudan Univ, Huadong Hosp, Dept Surg, Shanghai, Peoples R China
[7] Sun Yat Sen Univ, Dept Gastr & Pancreat Surg, Ctr Canc, Guangzhou, Guangdong, Peoples R China
[8] Second Mil Med Univ, Shanghai Changzheng Hosp, Dept Pancreat Biliary Surg, Shanghai, Peoples R China