[1] Shanghai Jiao Tong Univ, Dept Gastroenterol, Sch Med, Shanghai Ruijin Hosp, Shanghai 200025, Peoples R China
[2] Shanghai Jiao Tong Univ, Dept Radiol, Sch Med, Shanghai Ruijin Hosp, Shanghai 200025, Peoples R China
[3] Shanghai Jiao Tong Univ, Dept Gen Surg, Sch Med, Shanghai Ruijin Hosp, Shanghai 200025, Peoples R China
[4] Shanghai Jiao Tong Univ, Dept Pathol, Sch Med, Shanghai Ruijin Hosp, Shanghai 200025, Peoples R China