1. Division of Neurology, Department of Pediatrics; Children's Hospital of Philadelphia; Philadelphia PA
2. Department of Neuropediatrics; University Medical Center Schleswig-Holstein, Christian Albrecht University; Kiel Germany
3. Department of Neurology, Perelman School of Medicine; University of Pennsylvania; Philadelphia PA
4. Department of Biology and Medical Genetics, School of Medicine; University of Rijeka; Rijeka Croatia
5. Departments of Genetics and Genome Sciences, Pediatrics, and Neurology, and Center for Human Genetics; Case Western Reserve University School of Medicine; Cleveland OH
6. Division of Human Genetics, Department of Pediatrics, Individualized Medical Genetics Center; Children's Hospital of Philadelphia; Philadelphia PA
7. Clinical Institute of Medical Genetics; University Medical Centre Ljubljana; Ljubljana Slovenia
8. Division of Clinical Genomics; Ambry Genetics; Aliso Viejo CA
9. Department of Neuroscience, Perelman School of Medicine; University of Pennsylvania; Philadelphia PA