References
- Whorwell P J, McCallum M, Creed F H, Roberts C T. Non-colonic features of irritable bowel syndrome. Gut 1986; 27: 37–40
- Bonnevie O. Outcome of non-ulcer disease. Scand J Gastroenterol 1982; 17(suppl 79)135–138
- Talley N J, McNeil D, Hayden A, Colreavy C, Piper D W. Prognosis of chronic unexplained dyspepsia. Gastroenterology 1987; 92: 1060–1066
- Sloth H. Jørgensen LS. Chronic non-organic upper abdominal pain. Diagnostic safety and prognosis of gastrointestinal and non-intestinal symptoms. A 5-to 7-year follow-up study. Scand J Gastrocnterol 1988; 23: 1275–1280
- Jørgensen L S, Bønløkke L, Christensen N J. Life strain, life events, and autonomic response to a psychological strcssor in patients with chronic upper abdominal pain. Scand J Gastroenterol 1986; 21: 605–613
- Jørgensen L S, Bøinløkke L, Wamberg P. Non-ulcer upper dyspepsia. Aspects of pain. Scand J Gastroenterol 1985; 20: 4650
- Brodman K, Erdmann A J, Lorge I, Wolff H G. The Cornell medical index health questionnaire (manual). Cornell University Medical College, New York 1956
- Kühl P-H, Martini S. Psychically vulnerable persons. Their social and living conditions. Teknisk Forlag, Copenhagen 1981, The Danish National Institute of Social Research, Publication 102
- Armitage P. Statistical methods in medical research. Blackwell, Oxford 1971; 363–364
- Harvey R F, Mauad E C, Brown A M. Prognosis in the irritable bowel syndrome, a 5-year prospective study. Lancet 1987; 1: 963–965
- Svendsen J H, Munck L K, Andersen J R. Irritable bowel syndrome—prognosis and diagnostic safety. A 5-year follow-up study. Scand J Gastroenterol 1985; 20: 415–418
- Macdonald A J, Bouchicr I AD. Non-organic gastrointestinal illness: a medical and psychiatric study. Br J Psychiat 1980; 136: 276–283
- Sjødin I, Svedlund J. Psychological aspects of non-ulcer dyspepsia: a psychosomatic view focusing on a comparison between the irritable bowel syndrome and peptic ulcer disease. Scand J Gastroenterol 1985; 20(suppl 109)51–58