1. Department of Neurosurgery, University of Oklahoma, HSC, Oklahoma City, Oklahoma.
2. Advanced Magnetic Resonance Center, Free Radical Biology and Aging Research Program, MS21, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma. (Current address: Center for Advanced Imaging, The University of Queensland, St. Lucia, Australia.)
3. Department of Surgery, University of Oklahoma, HSC and the Veterans Medical Administration Center, Oklahoma City, Oklahoma.
4. Department of Psychiatry and Behavioral Sciences, University of Oklahoma, HSC, Oklahoma City, Oklahoma.
5. Department of Pathology, University of Oklahoma, HSC and the Veterans Medical Administration Center, Oklahoma City, Oklahoma.