[1] Jinzhou Med Univ, Dept Gen Surg, Jinzhou 121001, Peoples R China
[2] Da Zhongcun Cent Hlth Ctr Lanling Country, Linyi 276000, Shandong, Peoples R China
[3] Linyi Peoples Hosp, Educ & Teaching Dept, Grad Management Off, Linyi 276000, Shandong, Peoples R China
[4] Linyi Peoples Hosp, Inst Digest Surg, Dept Hepatobiliary Surg & Minimally Invas, 27 Jiefang East Rd, Linyi 276000, Shandong, Peoples R China
[5] Linyi Peoples Hosp, Prof Cais Lab, Dept Hepatobiliary Surg & Minimally Invas, Linyi 276000, Shandong, Peoples R China