1. Non-ulcer dyspepsia, introduction: epidemiological data;Krag;Scand J Gastroenterol,1982
2. Ulcer-like dyspepsia;Crean;Scand J Gastroenterol,1982
3. Further investigations and treatment of non-ulcer dyspepsia;Petersen;Scand J Gastroenterol,1982
4. Other causes of dyspepsia;Krag;Scand J Gastroenterol,1982
5. Diseases of the digestive tract;Truelove,1972