1. Department of Neurology, Barrow Neurological Institute, Phoenix, Arizona
2. Department of Neurological Surgery, Barrow Neurological Institute, Phoenix, Arizona
3. Department of Neurobiology, Barrow Neurological Institute, Phoenix, Arizona
4. medical student at School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
5. now affiliated with Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston
6. Department of Neurological Surgery, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
7. Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
8. School of Nursing, University of Pittsburgh, Pittsburgh, Pennsylvania
9. Clinical and Translational Science Institute, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
10. Department of Pediatrics, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
11. Safar Center for Resuscitation Research, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania