1. Department of Radiology; University of Pittsburgh, Pittsburgh, Pennsylvania, USA
2. Department of Neurosurgery; Yale University School of Medicine, New Haven, Connecticut, USA
3. Department of Neurology; Yale University School of Medicine, New Haven, Connecticut, USA
4. Department of Neurology; West Haven Veterans Administration Medical Center, West Haven, Connecticut, USA
5. Department of Psychiatry; Yale University School of Medicine, New Haven, Connecticut, USA
6. Department of Psychology; West Haven Veterans Administration Medical Center, West Haven, Connecticut, USA
7. Department of Neurology, F. Edward Hébert School of Medicine; Uniformed Services University of the Health Sciences; Bethesda Maryland USA
8. Integrated Services Group, Inc.; Potomac Maryland USA
9. Department of Neurology; University of Pittsburgh, Pittsburgh, Pennsylvania, USA