1. From the Hepatobiliary Center (G.W.J., H.Z., K.W., Y.X.X., Yao-Dong Zhang, W.J.J., X.C.L., X.H.W.) and Department of Radiology (Yu-Dong Zhang, F.P.Z.), The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, P.R. China; and Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, Nanjing, P.R. China (G.W.J., H.Z., K.W., Y.X.X., Yao-Dong Zhang, W.J.J., X.C.L., X.H.W.).