1. Department of Genetic Medicine, University of Manchester, Manchester Academic Health Science Centre, Central Manchester Foundation Trust University Hospitals, Manchester, United Kingdom
2. Imaging, Genomics and Proteomics Research Group, University of Manchester, Manchester, United Kingdom
3. Department of Pediatric Neurology, Children's Hospital, Harlaching, Munich and University of Mainz, Germany
4. Child Neuropsychiatry Unit, University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy
5. Division of Medical Genetics, Alberta Children's Hospital, Calgary, Canada
6. Department of Paediatrics, Royal Berkshire Hospital, Reading, United Kingdom
7. Department of Pediatrics and Neonatology, Universitätsklinikum des Saarlandes, Homburg, Germany
8. Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
9. Department of Genetics, Tartu University Hospital, Tartu, Estonia
10. Department of Neurology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
11. Department of Neuroradiology, Salford Royal NHS Foundation Trust, Salford, United Kingdom
12. Department of Clinical Genetics, Oxford Radcliffe Hospitals NHS Trust, Oxford, United Kingdom
13. Department of Clinical Neurosciences, Western General Hospital, Edinburgh, United Kingdom
14. Department of Child Neurology, VU University Medical Center, Amsterdam, The Netherlands
15. Center for Human Genetics, University Hospitals Leuven, KU Leuven, Leuven, Belgium
16. North West Thames Regional Genetics Service, North West London Hospitals NHS Trust, Harrow, United Kingdom
17. Department of Paediatric Neurology, Southampton General Hospital, Southampton, United Kingdom
18. Department of Paediatric Neurology, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom