1. Department of Psychology; Philadelphia College of Osteopathic Medicine; Philadelphia Pennsylvania USA
2. National Board of Medical Examiners; Philadelphia Pennsylvania USA
3. Department of Neurology; Penn State Hershey Medical Center, Department of Neurology; EC 037, P.O. Box 859, Hershey Pennsylvania 17033 USA
4. Department of Neurology; Medical College of Wisconsin; Milwaukee Wisconsin USA
5. Department of Neurology; Mayo Clinic Jacksonville; Jacksonville Florida USA
6. Department of Neurology; Wake Forest University; Winston-Salem North Carolina USA
7. Department of Neurology; The Johns Hopkins University School of Medicine; Baltimore Maryland USA
8. Department of Neurology; University of Pennsylvania; Philadelphia Pennsylvania USA
9. Department of Neurology; University of Michigan; Ann Arbor Michigan USA
10. Department of Neurology; Lahey Clinic; Burlington Massachusetts USA
11. Department of Neurology; University of Minnesota; Minneapolis Minnesota USA
12. Department of Neurology; University of Washington; Seattle Washington USA