1. Division of Pediatric Neurology, University of Texas Southwestern Medical School, Dallas, TX
2. Departments of Neurology, Pediatrics, and Nuclear Medicine, Children's Hospital of Michigan and Wayne State University, Detroit, MI
3. Division of Pediatric Neurology, Montefiore Medical Center, New York, NY
4. Division of Pediatric Neurology, West Virginia University School of Medicine, Morgantown, WV
5. Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD