1. Department of Neurology, University of Alabama, Birmingham, AL
2. Department of Neurology, Vanderbilt University Medical Center, Nashville, TN
3. Department of Psychiatry, Stanford University, Stanford, CA
4. Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
5. Children's Hospital Boston, Harvard Medical School, Boston, MA
6. Geisel School of Medicine at Dartmouth, Hanover, NH