1. Reference Center for Neuromuscular Disorders APHP Institute of Myology Pitié‐Salpêtrière Hospital Paris France
2. Institute of Myology Centre de Recherche en Myologie UMRS974 Sorbonne Université – INSERM Paris France
3. Reference Center for Muscle Channelopathies Service de Biochimie et Centre de Génétique APHP Pitié‐Salpêtrière Hospital Paris France
4. Neuromuscular Morphology Unit Institute of Myology Pitié‐Salpêtrière Hospital Paris France
5. Reference Center for Neuromuscular Disorders APHP Raymond‐Poincaré Hospital Paris France
6. Neurology Department Pierre‐Paul Riquet Hospital CHU Toulouse Toulouse France
7. Reference Centre for Neuromuscular Disorders Pellegrin Hospital CHU Bordeaux Bordeaux France
8. Neuromuscular Diseases and ALS Specialized Center University of Nice‐Sophia Antipolis Nice France
9. UMR7370 CNRS LP2M Labex ICST Faculty of Medicine University of Nice‐Sophia Antipolis Nice France
10. Assistance Publique‐Hôpitaux de Marseille Department of Neurology and Neuromuscular Diseases La Timone Hospital Marseille France
11. AOC (Atlantique‐Occitanie‐Caraïbe) Reference Centre for Neuromuscular Disorders Neuropediatric Department Toulouse University Hospital Toulouse France
12. Neurology Department Neuromuscular Center CHRU Cavale Blanche Brest France
13. Department of Neurology University Hospital Timone Marseille France
14. Pediatrics Department APHP Robert‐Débré Hospital Paris France
15. Reference Center for Muscle Channelopathies APHP Institut de Myologie Pitié‐Salpêtrière Hospital Paris France