1. GlaxoSmithKline, Research Triangle Park, North Carolina;
2. Division of Pediatric Neurology, Children’s Hospital of the King’s Daughters, Norfolk, Virginia;
3. Division of Neurology, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, College of Medicine, Cincinnati, Ohio;
4. Palm Beach Headache Center, West Palm Beach, Florida;
5. Department of Neurology, Children’s Hospital of Savannah, Mercer University School of Medicine, Savannah, Georgia;
6. Department of Neurology, The Cleveland Clinic, Cleveland, Ohio; and
7. Department of Neurology, Dallas Pediatric Neurology Associates, Dallas, Texas