1. Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, Pennsylvania.
2. Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, Pennsylvania.
3. Department of Psychology, Arizona State University, Tempe, Arizona.
4. Department of Clinical and Health Psychology, University of Florida, Gainesville, Florida.
5. University of Toledo College of Medicine, Toledo, Ohio.
6. Department of Psychology, University of Pittsburgh, Pittsburgh, Pennsylvania.
7. Center for Neuroscience, University of Pittsburgh, Pittsburgh, Pennsylvania.
8. Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, Pennsylvania.