As Terri Schiavo remains in hospice care and without a feeding tube, new questions are being raised about her level of awareness. How is a "persistent vegetative state" different from a "minimally conscious state," and how do neurologists diagnose the difference?
James Bernat, professor of neurology, Dartmouth Medical School
Timothy E. Quill, professor of medicine, psychiatry and medical humanities. Director, Center for Palliative Care and Clinical Ethics, University of Rochester Medical Center
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