1. Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania.
2. Brain Trauma Research Center, University of Pittsburgh, Pennsylvania.
3. Department of Acute/Tertiary Care, University of Pittsburgh School of Nursing, Pittsburgh, Pennsylvania.
4. Department of Pediatrics and Critical Care Medicine, University of Pittsburgh and Children's Hospital of Pittsburgh, Pennsylvania.
5. Department of Critical Care Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
6. Safar Center for Resuscitative Research, University of Pittsburgh, Pennsylvania.