[Xie, Rongjun; Liu, Longfei; Lu, Xianzhou] Univ South China, Affiliated Nanhua Hosp, Hengyang Med Sch, Dept Gen Surg, 336,Dongfeng South Rd, Hengyang 421002, Peoples R China.
[Xie, Rongjun; Li, Guoxin; Li, GX] Southern Med Univ, Nanfang Hosp, Sch Clin Med 1, Dept Gen Surg, 1838 Guangzhou Ave North, Guangzhou 510515, Peoples R China.
[Yao, Hongyi; He, Chengjian] Univ South China, Affiliated Nanhua Hosp, Hengyang Med Sch, Dept Intens Care Med, 336,Dongfeng South Rd, Hengyang 421002, Peoples R China.