[1] Dalian Med Univ, Affiliated Hosp 1, Dept Gen Surg, 222 Zhongshan Rd, Dalian 116011, Liaoning, Peoples R China
[2] Wuhan Univ, Renmin Hosp, Dept Hepatobil & Laparoscop Surg, Wuhan 430060, Hubei, Peoples R China
[3] Nanjing Univ, Jinling Hosp, Sch Med, Res Inst Gen Surg,Dept Crit Care Med, Nanjing 210093, Jiangsu, Peoples R China
[4] Dalian Med Univ, Affiliated Hosp 1, Clin Lab Integrat Med, Dalian 116011, Liaoning, Peoples R China