[1] Nanchang Univ, Dept Gastroenterol, Affiliated Hosp 1, Nanjing, Jiangsu, Peoples R China
[2] Southern Med Univ, Nanfang Hosp, Endoscop Ctr, Guangzhou, Guangdong, Peoples R China
[3] Jilin Univ, China Japan Union Hosp, Dept Gastroenterol, Changchun, Peoples R China
[4] Shanghai Jiao Tong Univ, Affiliated Renji Hosp, Shanghai 200030, Peoples R China
[5] First Hosp Nanjing City, Dept Gastroenterol, Nanjing, Jiangsu, Peoples R China
[6] Peking Univ, Hosp 1, Beijing, Peoples R China
[7] Anhui Med Univ, Affiliated Hosp 1, Dept Gastroenterol, Hefei, Anhui, Peoples R China
[8] Cent S Univ, Xiangya Hosp, Dept Gastroenterol, Changsha, Hunan, Peoples R China
[9] Shanxi Med Univ, Affiliated Hosp 1, Dept Gastroenterol, Shanxi, Peoples R China
[10] Qinghai Univ, Affiliated Hosp, Dept Gastroenterol, Xining City, Peoples R China
[11] Kunming Med Univ, Affiliated Hosp 1, Dept Gastroenterol, Kunming City, Peoples R China
[12] Third Mil Med Univ, Daping Hosp, Endoscop Ctr, Chongqing, Peoples R China
[13] Shandong Univ, Qilu Hosp, Dept Gastroenterol, Jinan, Shandong, Peoples R China
[14] 1 Peoples Hosp Guangzhou City, Dept Gastroenterol, Guangzhou, Guangdong, Peoples R China
[15] Nanchang Univ, Affiliated Hosp 1, Inst Digest Dis, Nanchang, Peoples R China