1. Departments of Neurosciences and Pediatrics, University of California San Diego, La Jolla, California
2. Departments of Neurosciences and Pediatrics, Rady Children's Hospital and Health Center, San Diego, California
3. Division of Neuroscience, Cleveland Clinic, Cleveland, Ohio
4. Division of Human Genetics, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, Pennsylvania
5. Division of Pediatric Neurology, Children's Hospital and Regional Medical Center, University of Washington, Seattle, Washington
6. Division of Child Neurology, University Children's Hospital, Heidelberg, Germany
7. Division of Child Neurology, University Children's Hospital, Zürich, Switzerland
8. Division of Child Neurology, Queen Silvia Children's Hospital, Göteborg, Sweden