Corresponding Author: Feng Zhang, MD, PhD, Department of Liver Surgery, First Affiliated Hospital of Naniing Medical University; Key Laboratory of Living Donor Liver Transplantation of Ministry of Public Health, 300 Guangzhou Road, Nanjing 210029, China (Tel: +86-25-83718836 ext 6476; Fax: +86-25-83672106; Email: zhangfeng1958@hotmail.com)