1. Paris‐Saclay University, UVSQ, Inserm, END‐ICAP Versailles France
2. Neuromuscular Reference Center, Pediatric Department Raymond Poincaré Hospital Garches France
3. Neuromuscular Reference Center, Myology Institute Pitié‐Salpêtrière Hospital Paris France
4. Center of Research in Myology, Sorbonne University, Inserm UMRS 974, Myology Institute Pitié‐Salpêtrière Hospital Paris France
5. Cardiology Department APHP, Cochin Hospital, FILNEMUS, Paris‐Descartes, Sorbonne Paris Cité University Paris France
6. Biostatistic, Medical Affairs Direction AFM‐Théléthon Evry France
7. Neuromuscular Reference Center, Pediatric Department Hautepierre Hospital Strasbourg France
8. Neuromuscular Reference Center, Pediatric Department Necker‐Enfants Malades Hospital Paris France
9. Department of Pediatrics, Neuromuscular Disease Reference Center, Division of Child Neurology Faculty of Medicine, University of Liège Liège Belgium
10. MDUK Neuromuscular Centre, Department of Paediatrics University of Oxford Oxford UK
11. Laboratory for Biochemistry and Molecular Genetics Cochin Hospital Paris France