1. Neuromuscular and Neurogenetic Disorders of Childhood Section National Institute of Neurological Disorders and Stroke, National Institutes of Health Bethesda Maryland USA
2. Institute of Medical Genetics and Applied Genomics, University of Tübingen Tübingen Germany
3. Department of Paediatric Neurology University Children's Hospital Tübingen Germany
4. Clinical Genetics Department, Human Genetics and Genome Research Division National Research Centre Cairo Egypt
5. Department of Human Genetics Radboud University Medical Center Nijmegen The Netherlands
6. Department of Neuromuscular Disorders University College London Institute of Neurology London UK
7. Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard Cambridge Massachusetts USA
8. Department of Genetics University of Groningen, University Medical Center Groningen Groningen The Netherlands
9. Department of Neurology University of Groningen, University Medical Center Groningen Groningen The Netherlands
10. Rehabilitation Medicine Department, Clinical Research Center, National Institutes of Health Bethesda Maryland USA
11. Department of Neurosciences Royal Victoria Hospital Belfast UK
12. Department of Neurology Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre Nijmegen The Netherlands
13. Department of Neurology Children's Health Dallas Texas USA
14. Department of Pathology UT Southwestern Medical Center Dallas Texas USA
15. EMG Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health Bethesda Maryland USA
16. Laboratory for Pediatric Brain Disease, Howard Hughes Medical Institute, University of California San Diego California USA
17. Rady Children's Institute for Genomic Medicine, Rady Children's Hospital San Diego California USA
18. Department of Pediatrics UT Southwestern Medical Center Dallas Texas USA
19. Department of Neuropediatrics and Muscle Disorders Medical Center – University of Freiburg, Faculty of Medicine Freiburg Germany
20. Children's Hospital of Eastern Ontario Research Institute, University of Ottawa Ottawa Ontario Canada
21. Division of Neurology, Department of Medicine The Ottawa Hospital Ottawa Ontario Canada
22. Department of Clinical Neurosciences University of Cambridge Cambridge UK