title: Reply.
authors.affiliation: Division of Gastroenterology and Hepatology and Department of Medicine, Stanford University School of Medicine, Stanford, California.
authors.forename: Uri
authors.initials: U
authors.lastname: Ladabaum
authors.affiliation: Division of Gastroenterology and Hepatology and Department of Medicine, Stanford University School of Medicine, Stanford, California.
authors.forename: Ajitha
authors.initials: A
authors.lastname: Mannalithara