1. Virginia Institute of Neuropsychiatry, Midlothian, VA, USA
2. Randolph Macon College, Ashland, VA, USA
3. Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University, Richmond, VA, USA
4. University of Virginia, Charlottesville, VA, USA
5. University of North Carolina at Wilmington, Wilmington, NC, USA
6. Virginia Polytechnic Institute and State University, Blacksburg, VA, USA