1. U.S. Bureau of the Census: Projections of the Population of the United States by Age, Sex and Race: 1998 to 2080. Series P-25, No. 1018:4-9;Spencer,1989
2. Coronary disease in elderly patients: myocardial infarction and myocardial revascularization;Wenger;Heart Dis Stroke,1994
3. Changes in mortality after myocardial revascularization in the elderly;Peterson;Ann Intern Med,1994
4. Coronary heart disease and related procedures;Feinleib;Circulation,1989
5. Guidelines for percutaneous transluminal coronary angioplasty;Ryan;Circulation,1988