1. Current Opinions of the Council on Ethical and Judicial Affairs of the American Medical Association: Withholding or withdrawing life prolonging treatment. Chicago, IL: American Medical Association, 1992.
2. American Nurses Association Task Force on the Nurse’s role in End of Life Decisions. Position Statement on Foregoing Artificial Nutrition and Hydration. Washington, DC: American Nurses Association, 1992.
3. American College of Physicians Ethics Manual. 3rd ed. Ann. Intern. Med. 1992;117:947–60.
4. Ethical and moral guidelines for the initiation, continuation, and withdrawal of intensive care;Chest,1990
5. Decisions to limit or continue life-sustaining treatment by critical care physicians in the United States: conflicts between physicians’ practices and patient’s wishes;Asch;Am. J. Respir. Crit. Care Med.,1995