[1] Naval Med Univ, Changhai Hosp, Digest Endoscopy Ctr, Dept Gastroenterol, Shanghai 200433, Peoples R China
[2] Shanghai Inst Pancreat Dis, Shanghai 200433, Peoples R China
[3] Heilongjiang Prov Hosp, Dept Gastroenterol, Harbin 150030, Heilongjiang, Peoples R China
[4] Naval Med Univ, Changhai Hosp, Dept Hepatobiliary Pancreat Surg, Shanghai 200433, Peoples R China
[5] Xi An Jiao Tong Univ, Affiliated Hosp 1, Dept Hepatobiliary Surg, Xian 710061, Shaanxi, Peoples R China
[6] Shanghai Jiao Tong Univ, Sch Med, Ruijin Hosp, Shanghai Clin Ctr Endocrine & Metab Dis, Shanghai 200025, Peoples R China
[7] Shanghai First Peoples Hosp, Dept Radiol, Shanghai 200080, Peoples R China
[8] Peking Union Med Coll Hosp, Dept Pathol, Beijing 100730, Peoples R China
[9] Fourth Mil Med Univ, Xijing Hosp, Dept Gastroenterol, Xian 710032, Shaanxi, Peoples R China
[10] Peking Union Med Coll Hosp, Dept Gen Surg, Beijing 100730, Peoples R China
[11] Zhejiang Univ, Sch Med, Affiliated Hosp 1, Dept Hepatobiliary Pancreat Surg, Hangzhou 310003, Zhejiang, Peoples R China
[12] Capital Med Univ, Beijing Friendship Hosp, Dept Digest Endoscopy, Beijing 100050, Peoples R China