1. Department of Pathology, University of Pittsburgh, Pittsburgh, Pennslyvania.
2. VA Pittsburgh Healthcare System and Safar Center for Resuscitation Research, Pittsburgh, Pennsylvania.
3. Department of Neurosurgery, Anesthesiology, Physical Medicine, University of Pittsburgh, Pittsburgh, Pennslyvania.
4. Center for Biologic Imaging, University of Pittsburgh, Pittsburgh, Pennslyvania.
5. NeuroScience Associates, Knoxville, Tennessee.
6. Department of Pediatrics, and Rehabilitation and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennslyvania.