1. Department of Neurology, University of Utah, Salt Lake City
2. Dell Medical School, Austin, Texas
3. Department of Neurology, University of California, San Francisco
4. Department of Neurology, Yale University, New Haven, Connecticut
5. Department of Neurology, Stanford University, Stanford, California
6. Department of Neurology, University of Washington, Seattle
7. Department of Neurology, Vanderbilt University, Nashville, Tennessee
8. Department of Neurology, New York University, New York