Letter: The American Digestive Disease Society: the way of the future.
D001660:Biliary Tract Diseases; D004935:Esophageal Diseases; D005762:Gastroenterology; D005767:Gastrointestinal Diseases; D006801:Humans; D008107:Liver Diseases; D009316:National Institutes of Health (U.S.); D012955:Societies, Medical; D014481:United States