3Williams MA, Fleg JL, Ades PA, et al. Secondary prevention of coronary heart disease in the elderly with emphasis on patients ≥75 years of gae. Circulation, 2002,105 : 1735.
4Ryan TJ, Loop FDL, Faxon DP, et al. Guidelines for percutaneoustransluminal coronary angioplasty:a report of the American College of Cardiology/American Heart association Task force on assessment of diagnostic and theropeutic cardiovascular procedures. Am Coll Cardiol, 1988,12:529~545.
6Thompson RC, Holmes DR Jr, Gersch BJ, et al. Percutaneous transluminal coronary angioplasty in the elderly: early and longterm results. J Am Coll Cardiol, 1991,17:1245 ~ 1250.