1. Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, Pennsylvania.
2. School of Nursing, University of Pittsburgh, Pittsburgh, Pennsylvania.
3. Department of Neurosurgery, University of Washington, Seattle, Washington.
4. Safar Center for Resuscitation Research, Seton Hill University, Greensburg, Pennsylvania.
5. Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland.
6. Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
7. School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
8. Department of Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania.
9. VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania.