1. Dubowitz Neuromuscular Centre, UCL Great Ormond Street Hospital Institute of Child Health London UK
2. Neuromuscular Unit, Department of Neurology Hospital Sant Joan de Déu Barcelona Spain
3. Program in Medical and Population Genetics and Center for Mendelian Genomics Broad Institute of MIT and Harvard Cambridge Massachusetts USA
4. Department of Neurology Boston Children's Hospital and Harvard Medical School Boston Massachusetts USA
5. Kirby Neurobiology Center Boston Children's Hospital Boston Massachusetts USA
6. Victorian Clinical Genetics Services Murdoch Childrens Research Institute Parkville Victoria Australia
7. Department of Paediatrics University of Melbourne Parkville Victoria Australia
8. Howard Hughes Medical Institute Chevy Chase Maryland USA
9. Department of Ophthalmology Royal Childrens's Hospital Parkville Victoria Australia
10. Murdoch Children's Research Institute Melbourne Victoria Australia
11. Department of Paediatrics University of Melbourne Melbourne Victoria Australia
12. Department of Clinical Genetics, North East Thames Regional Genetic Service Great Ormond Street Hospital London UK
13. Department of Ophthalmology Boston Children's Hospital and Harvard Medical School Boston Massachusetts USA
14. Division of Genetics and Genomics Boston Children's Hospital and Harvard Medical School Boston Massachusetts USA
15. Centre for Neuromuscular Diseases UCL Institute of Neurology London UK
16. NIHR Great Ormond Street Hospital Biomedical Research Centre UCL Great Ormond Street Institute of Child Health & Great Ormond Street Hospital for Children NHS Foundation Trust London UK