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2. Manning AP, Thompson WG, Heaton KW, Morris AF: Towards a positive diagnosis of irritable bowel. BMJ 1978, 38:1569–1580. This was the first successful attempt to define diagnostic criteria for IBS, which had been regarded as a diagnosis of exclusion up to this point.
3. Thompson WG, Dotevall G, Drossman DA, et al.: Irritable bowel syndrome: guidelines for the diagnosis. Gastroenterol Int 1989, 2:92–95.
4. Thompson WG, Longstreth GF, Drossman DA, et al.: Functional bowel disorders and functional abdominal pain. Gut 1999, 45:II43-II46.
5. Longstreth GF, Wolde-Tsadik G: Irritable bowel-type symptoms in HMO examiners: prevalence, demographics and clinical correlates. Dig Dis Sci 1993, 38:1581–1589.