title: Reply.
authors.affiliation: Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland; Department of Gastroenterology and Hepatology, VU University Medical Center, Amsterdam, The Netherlands.
authors.forename: Ynto S
authors.initials: YS
authors.lastname: De Boer
authors.affiliation: Duke Clinical Research Institute, Durham, North Carolina.
authors.forename: Andrzej S
authors.initials: AS
authors.lastname: Kosinski
authors.affiliation: Division of Pharmacotherapy and Experimental Therapeutics, University of North Carolina, Chapel Hill, North Carolina.
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Urban
authors.affiliation: Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, Maryland.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Zhao
authors.affiliation: Division of Pharmacotherapy and Experimental Therapeutics, University of North Carolina, Chapel Hill, North Carolina.
authors.forename: Nanye
authors.initials: N
authors.lastname: Long
authors.affiliation: Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana.
authors.forename: Naga
authors.initials: N
authors.lastname: Chalasani
authors.affiliation: Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland.
authors.forename: David E
authors.initials: DE
authors.lastname: Kleiner
authors.affiliation: Liver Disease Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland.
authors.forename: Jay H
authors.initials: JH
authors.lastname: Hoofnagle