1. Department of Neurology, Johns Hopkins University School of Medicine; Baltimore MD
2. Department of Neurology, Northwestern University; Chicago IL
3. Department of Neurology, Kansas University Medical Center; Kansas City MO
4. Department of Neurology, Beth Israel Deaconess Medical Center; Harvard Medical School; Boston MA
5. Department of Neurology, Icahn School of Medicine at Mount Sinai; New York City NY
6. Department of Neurology, University of Utah; Salt Lake City UT
7. Department of Neurology, Virginia Commonwealth University