1. Department of Hepatobiliary Surgery; Xijing Hospital; Fourth Military Medical University; Xi'an China
2. Laboratory Animal Institute; Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital; University of Electronic Science and Technology of China; Chengdu China
3. Institute of Animal Science of Chinese Agriculture Sciences Academy; Beijing China
4. Department of Hepatobiliary Surgery; The Chinese PLA General Hospital; Beijing China