MCW HealthLink 
A look at coma and persistent vegetative state. Includes a discussion on treatments and prognosis.
http://healthlink.mcw.edu/article/921394859.htmlNINDS Information Page
Coma and persistent vegetative state data compiled by The National Institute of Neurological Disorders and Stroke.
http://www.ninds.nih.gov/health_and_medical/disorders/coma_doc.htm
World Medical Association
WMA policy: Statement on persistent vegetative state. Includes a definition, recovery and guidelines.
http://www.wma.net/e/policy/17-v_e.html
Responding to Patients in the Persistent Vegetative State - An Ethical and Legal Dilemma.
This article was published in Philosophia Christi 19.2 (Fall 1996): 55-83. This journal is a publication of the Evangelical Philosophical Society.
http://www.xenos.org/ministries/crossroads/donal/pvs.htm
