title: Reply.
authors.affiliation: Research Center for Biological Therapy, Beijing 302 Hospital, Beijing, China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism/National Institutes of Health, Bethesda, MD.
authors.forename: Bin
authors.initials: B
authors.lastname: Gao
authors.affiliation: Research Center for Biological Therapy, Beijing 302 Hospital, Beijing, China.
authors.forename: Fu-Sheng
authors.initials: FS
authors.lastname: Wang
mesh_terms: D006801:Humans; D008107:Liver Diseases / Q000453:epidemiology*