1. Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh Pennsylvania.
2. Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh Pennsylvania.
3. Department of Pharmacy and Therapeutics, University of Pittsburgh School of Medicine, Pittsburgh Pennsylvania.
4. University of Pittsburgh School of Pharmacy, University of Pittsburgh School of Medicine, Pittsburgh Pennsylvania.
5. Department of Pharmaceutical Sciences, University of Pittsburgh School of Medicine, Pittsburgh Pennsylvania.
6. Department of Epidemiology and Biostatistics, University of Pittsburgh School of Medicine, Pittsburgh Pennsylvania.
7. Department of Physical Medicine and Rehabilitation, University of Pittsburgh School of Medicine, Pittsburgh Pennsylvania.
8. Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh Pennsylvania.
9. Department of Neurological Surgery, Phoenix Children's Hospital, Phoenix, Arizona.