1. Diagnostic value of questionnaires regarding angina pectoris and oesophageal dysfunction in patients with chest pain;Areskog;Acta Med Scand,1981
2. How often does the gut cause anginal pain?;Davies;Acta Med Scand,1981
3. The oesophagus as a cause of recurrent chest pain: Which patients should be investigated and which tests should be used;Caestecker;Lancet,1985
4. Oesophageal dysfunction and angina pectoris in a Swedish population selected at random;Tibbling;Acta Med Scand,1981
5. Kjellen G. Oesophageal dysfunction and bronchial asthma Linköping University Medical 1981 Thesis