1. Department of Critical Care Medicine, the Safar Center for Resuscitation Research and the Brain Trauma Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania.
2. Department of Pediatrics, the Safar Center for Resuscitation Research and the Brain Trauma Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania.
3. Department of Neurological Surgery, the Safar Center for Resuscitation Research and the Brain Trauma Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania.
4. Department of Surgery, University of Medicine and Dentistry of New Jersey, Newark, New Jersey.