[1]Fudan Univ, Zhong Shan Hosp, GI & Hepatol, Shanghai 200433, Peoples R China.
[2]Jilin Univ, China Japan Union Hosp, Gastroenterol, Changchun 130023, Peoples R China.
[3]Henan Prov Peoples Hosp, Dept Infect Dis, Infect Dis, Zhengzhou, Peoples R China.
[4]Fourth Mil Med Univ, Xijing Hosp, Digest Dis, Xian 710032, Peoples R China.
[5]Jilin Univ, Hosp 1, Digest Dis, Changchun 130023, Peoples R China.
[6]Nanchang Univ, Affiliated Hosp 1, Digest Diease, Nanchang, Peoples R China.
[7]Zhejiang Prov Hosp Trandit Chinese Med, Digest Dis, Hangzhou, Zhejiang, Peoples R China.
[8]Guangxi Med Univ, AffiliatedHosp 1, Digest Dis, Nanning, Peoples R China.
[9]Tianjin Second Peoples Hosp, Hepatol, Tianjin, Peoples R China.
[10]Anhui Med Univ, Affiliated Hosp 1, Digest Dis, Hefei, Peoples R China.
[11]Kunming Med Univ, Affiliated Hosp 2, Hepatol, Kunming, Peoples R China.