1. Report of joint working group on cardiological intervention in elderly patients;of Physicians, Royal College,1991
2. Economics of coronary artery bypass grafting;Williams, A.;BMJ,1985
3. Thrombolytic therapy in the early treatment of acute myocardial infarction: economic appraisal of treatment. In: Clinical resource and audit group conference;Soper, J.;Royal College of Physicians and Surgeons of Glasgow
4. Cardiac surgery in the elderly can produce substantial benefits at a price of a moderately increased risk;Elder, A.T.; Cameron, E.W.J.;BMJ,1989
5. Percutaneous transluminal coronary angioplasty in octogenarians;Jeroudi, M.O.; Kleiman, N.S.; Minor, S.T.;Ann Intern Med,1990