1. Ashley, E.A., V.K. Raxwal, and V.F. Froelicher, The prevalence and prognostic significance of electrocardiographic abnormalities. Curr. Probl. Cardiol., 2000;25: 1–72.
2. Keys, A., H.L. Taylor, H. Blackurn, J. Brozek, J.T. Anderson, and E. Simonson, Coronary heart disease among the Minnesota business and professional men followed fifteen years. Circulation, 1965;28: 381–395.
3. Keys, A., C. Aravanis, H.W. Blackburn, et al., Epidemiological studies related to coronary heart disease: characteristics of men aged 40–59 in seven countries. Acta Med. Scand., 1967;460(Suppl): 1–392.
4. Heart Association Monograph,1970
5. Dawber, T.R., F.E. Moore, and G.V. Mann, Coronary heart disease in the Framingham study. Am. J. Public Health, 1957;47(Suppl. 1): 4–24.