1. From the Departments of Interventional Oncology (K.Z., X.Z., S.F., G.C., L.X., H.C., D.W., R.Y., X.W.), Cancer Epidemiology (W.Q.L.), Hepatic and Biliary Surgery (K.W., W.L., H.W., Q.B., M.L., C.H., B.X.), and Gastrointestinal Oncology (L.S.), Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, Beijing 100142, China.