1. They decide who lives, who dies;Alexander;Life,1962
2. Ethical principles in geriatric nephrology;Brodeur;Am J Kidney Dis,1990
3. Setting Limits: Medical Goals in an Aging Society;Callahan,1987
4. Medical futility, medical necessity: The problem-without-a-name;Callahan;Hastings Cent Rep,1991
5. Ethical issues;Cassel,1991