2011 Stefanie Monod, Rene Chiolero, Christophe Bula, and Lazare Benarovo, Ethical Issues in Nutrition Support of Severly Disabled Elderly Persons: A Guide for Health Professionals. JPEN J Parenter Enteral Nutr, May 2011 35: 295-302.
2010 Cynthia M.A. Geppert, Maria R. Andrews, and Mary Ellen Druyan. Ethical Issues in Artificial Nutrition and Hydration: A Review. JPEN J Parenter Enteral Nutr. 2010 34:79.
2009 Cheryl Monturo, PhD, RN. The Artificial Nutrition Debate: Still an Issue...After All These Years. Nutr Clin Pract. 2009;24:206.
2006 Albert Barrocas, MD, FACS. Nutrition Support and the Troubling Trichotomy: A Call to Action. Nutr Clin Pract. 2006;21:109.
2006 Robert L. Fine, MD. Ethical Issues in Artificial Nutrition and Hydration. Nutr Clin Pract. 2006;21:118.
2006 Fuhrman MP and Hermann VM. Bridging the Continuum: Nutrition Support in Palliative and Hospice Care. Nutr Clin Pract. 2006; 21: 134 - 141.
2006 Chernoff R. Tube Feeding Patients With Dementia. Nutr Clin Pract. 2006 ;21:142-146.
2006 Ferrie S. A Quick Guide to Ethical Theory in Healthcare: Solving Ethical Dilemmas in Nutrition Support Situations. Nutr Clin Pract. 2006;21:113-117.
2006 Gillick MR. The Use of Advance Care Planning to Guide Decisions About Artificial Nutrition and Hydration. Nutr Clin Pract. 2006;21:126-133.
2003 Barrocas A, Yarbrough G, Becnel PA, Nelson JE. Ethical and Legal Issues in Nutrition Support of the Geriatric Patient: The Can, Should and Must of Nutrition Support. Nutr Clin Pract.2003;18:37-47.
NIH/NINDS definitions of coma and PVS
Link for the 5th edition of the Ethical and Religious directives for Catholic Health care services. The language change is in directive #58 where the presumption of providing food and water was changed to an obligation unless the individual is actively dying. This apparently applies to anyone in a Catholic Hospital, regarless of their religion.