title: A time for change.
authors.affiliation: Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, 75235-9030.
authors.forename: J M
authors.initials: JM
authors.lastname: Dietschy
mesh_terms: D005762:Gastroenterology / Q000639:trends*; D006801:Humans; D012955:Societies, Medical / Q000458:organization & administration*; D014481:United States