1. Beauchamp TL, Childress J. Principles of Biomedical Ethics. New York: Oxford University Press;2001 .
2. A Quick Guide to Ethical Theory in Healthcare: Solving Ethical Dilemmas in Nutrition Support Situations
3. The Use of Advance Care Planning to Guide Decisions About Artificial Nutrition and Hydration
4. Reiser SJ, Dyck AJ, Curran WJ, eds. Hippocratic corpus: the art. In: Reiser SJ, Dyck AJ, Curran WJ, eds. Ethics in Medicine: Historical Perspectives and Contemporary Concerns. Cambridge, MA: MIT Press; 1977: 6–7.
5. Chadwisk J, Mann WN, translators. Aphorisms. In: Chadwisk J, Mann WN, translators. The Medical Works of Hippocrates. Oxford: Blackwell Scientific Publications; 1950:149 .