[1] Nanjing Univ, Affiliated Drum Tower Hosp, Med Sch, Dept Hepatobiliary Surg, 321 Zhongshan Rd, Nanjing 210008, Jiangsu, Peoples R China
[2] Nanjing Univ, Affiliated Drum Tower Hosp, Med Sch, Dept Gastroenterol, Nanjing 210008, Jiangsu, Peoples R China
[3] Nanjing Univ, Affiliated Drum Tower Hosp, Med Sch, Dept Oncol, Nanjing 210008, Jiangsu, Peoples R China