1. Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, Pennsylvania.
2. Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, Pennsylvania.
3. Department of Neurobiology, University of Pittsburgh, Pittsburgh, Pennsylvania.
4. Center for Neuroscience, University of Pittsburgh, Pittsburgh, Pennsylvania.
5. Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, Pennsylvania.
6. Division of Neuroscience, Biomedical Research Center of Michoacán, Mexican Social Security Institute, Morelia, Mexico.
7. Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.