title: Reply.
authors.affiliation: Department of Medicine, Gastroenterology Service, Walter Reed National Military Medical Center, Bethesda, Maryland.
authors.forename: Fong-Kuei F
authors.initials: FK
authors.lastname: Cheng
authors.affiliation: Department of Medicine, Gastroenterology Service, Walter Reed National Military Medical Center, Bethesda, Maryland.
authors.forename: Fouad J
authors.initials: FJ
authors.lastname: Moawad