title: Reply.
authors.affiliation: Center of Therapeutic Research for Hepatocellular Carcinoma, the 302nd Hospital, Beijing, China.
authors.forename: Chunping
authors.initials: C
authors.lastname: Wang
authors.affiliation: Division of GI/Hepatology, University of California, Irvine, CA.
authors.forename: Ke-Qin
authors.initials: KQ
authors.lastname: Hu
authors.affiliation: Center of Therapeutic Research for Hepatocellular Carcinoma, the 302nd Hospital, Beijing, China.
authors.forename: Yongping
authors.initials: Y
authors.lastname: Yang