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2. Do patients with irritable bowel syndrome in primary care really differ from outpatients with irritable bowel syndrome?;van der Horst;Gut,1997
3. Differences between generalist and specialist physicians regarding Helicobacter pylori and peptic ulcer disease;Fendrick;American Journal of Gastroenterology,1996
4. Management of dyspeptic patients by general practitioners and specialists;Stranghellini;Gut,1998
5. Aging and the alimentary tract;Farthing;Gut,1997