单位:[1]Huazhong Univ Sci & Technol,Tongji Med Coll,Tongji Hosp,Dept Gastroenterol & Hepatol,Wuhan,Peoples R China内科学系消化内科华中科技大学同济医学院附属同济医院[2]HUST,Tongji Med Coll,Tongji Hosp,Inst Pathol,Wuhan,Peoples R China病理研究所华中科技大学同济医学院附属同济医院病理科[3]HUST, Tongji Med Coll, Sch Basic Med, Dept Pathol, Wuhan, Peoples R China[4]HUST, Tongji Med Coll, Union Hosp, Div Gastroenterol, Wuhan, Peoples R China华中科技大学同济医学院附属协和医院[5]Wuhan Univ, Renmin Hosp, Dept Gastroenterol, Wuhan, Peoples R China[6]HUST, Tongji Med Coll, Cent Hosp Wuhan, Dept Gastroenterol, Wuhan, Peoples R China[7]HUST,Tongji Med Coll,Tongji Hosp,Dept Oncol,Wuhan,Peoples R China肿瘤科华中科技大学同济医学院附属同济医院[8]Univ Mississippi, Med Ctr, Dept Med, Div Digest Dis, Jackson, MS 39216 USA