1. Department of General Surgery Shanghai General Hospital Shanghai Jiao Tong University School of Medicine Shanghai P. R. China
2. Department of Hepatobiliary Surgery The Affiliated Hospital of Guizhou Medical University Guizhou P. R. China
3. Division of Transplantation Immunology National Research Institute for Child Health and Development Tokyo Japan
4. Department of Hepatobiliary Surgery Weifang People's Hospital Shandong P. R. China