[1] Nanjing Med Univ, Huaian Peoples Hosp 1, Dept Gen Surg, Huaian, Jiangsu, Peoples R China
[2] Lianshui Cty Peoples Hosp, Dept Gen Surg, Lianshui, Jiangsu, Peoples R China
[3] Nanjing Med Univ, Huaian Peoples Hosp 1, Dept Gastroenterol, Huaian, Jiangsu, Peoples R China