1. Observer error and variation in the interpretation of electrocardiograms in an epidemiological study of coronary heart disease;Acheson;Brit. J. Prev. & Soc. Med.,1960
2. ECG at rest and ECG response to exercise;Areskog;Acta chir. scand.,1965
3. Aerobic work capacity in men and women with special reference to age;åstrand;Acta physiol. scand.,1960
4. Exercise electrocardiogram in a 5-year follow-up study;Åstrand;Acta med. scand.,1963
5. Exercise electrocardiograms recorded with an 8-year interval in a group of 204 women and men 48-63 years old;Åstrand;Acta med. scand.,1965