title: Reply.
authors: Department of Medicine, Division of Gastroenterology, Oregon Health and Science University, Portland, Oregon.
authors: David
authors: D
authors: Lieberman
authors: Department of Medicine, Division of Gastroenterology, Indiana University Medical Center, Indianapolis, Indiana.
authors: Douglas
authors: D
authors: Rex
authors: Department of Medicine, Division of Gastroenterology, University of Pennsylvania Health System, Philadelphia, Pennsylvania.
authors: Michael
authors: M
authors: Kochman
authors: Temple-Fox Chase Cancer Center, Philadelphia, Pennsylvania.
authors: Jeffrey
authors: J
authors: Tokar