The Development of American Gastroenterology

acid activities advances American appendicitis appendix areas Association bismuth body Boston cancer cause Center century changes Chicago chronic clinical College colon concern conference continuing contributions costs death diagnosis digestive diseases direct disorders duodenal early effective effort endoscopic established examination experiments field function funds gastric gastroenterology gastrointestinal hepatitis Hospital human important improved increased initial interest internal intestinal John Journal knowledge later liver major medicine meeting method million National Institute nature noted observations operation organization pancreatic patients peptic ulcer persons Philadelphia physicians physiology population practice present Press problem Professor programs reference School scientific secretion Society specialists specialty stomach studies surgery surgical TABLE Thomas tion tract treatment tube ulcer United University various York