title: Reply.
authors.affiliation: Division of Gastroenterology, Veterans Affairs Puget Sound Health Care System and University of Washington, Seattle, WA.
authors.forename: Feng
authors.initials: F
authors.lastname: Su
authors.affiliation: Division of Gastroenterology, Veterans Affairs Puget Sound Health Care System and University of Washington, Seattle, WA.|Health Services Research and Development, Veterans Affairs Puget Sound Health Care System, Seattle, WA.
authors.forename: George N
authors.initials: GN
authors.lastname: Ioannou