1. Advanced Imaging Research Center; University of Texas Southwestern Medical Center; Dallas Texas USA
2. Department of Radiology; University of Texas Southwestern Medical Center; Dallas Texas USA
3. Philips Medical Systems; Cleveland Ohio USA
4. Department of Neurology and Neurotherapeutics; University of Texas Southwestern Medical Center; Dallas Texas USA
5. Department of Pediatrics; University of Texas Southwestern Medical Center; Dallas Texas USA
6. Department of Physiology; University of Texas Southwestern Medical Center; Dallas Texas USA
7. Department of Chemistry; University of Texas at Dallas; Richardson Texas USA
8. Department of Internal Medicine; University of Texas Southwestern Medical Center; Dallas Texas USA
9. VA North Texas Health Care System; Dallas Texas USA