1. Nord‐Est/Ile‐de‐France Neuromuscular Reference Center Myology Institute Pitié‐Salpêtrière Hospital ParisFrance
2. Department of Biochemistry and Molecular Genetics Cochin Hospital ParisFrance
3. Department of Neurology APHP Raymond Poincaré Hospital Nord‐Est/Ile‐de‐France Neuromuscular Reference Center Versailles Paris‐Saclay U 1179 INSERM, Versailles Saint‐Quentin‐en‐Yvelines University Saint‐AubinFrance
4. Developmental Diseases Clinic Necker‐Enfants Malades Hospital ParisFrance
5. Department of Neuropediatrics Nord‐Est/Ile‐de‐France Neuromuscular Reference Center Armand‐Trousseau Children’s Hospital ParisFrance
6. Neuromuscular Unit Pediatric Neurology and ICU Department Raymond Poincaré Hospital APHP Paris‐Saclay. UVSQ U1179 INSERM GarchesFrance
7. Pneumology Intensive Care Unit Raymond Poincaré Hospital ParisFrance
8. Resuscitation Department and Domiciliary Ventilation Unit Raymond Poincaré Hospital ParisFrance
9. Pneumology Department Armand‐Trousseau Children’s Hospital ParisFrance
10. INTEGRARE, Genethon, Inserm Evry University Paris‐Saclay University Evry France
11. Department of Neurosciences University of Padua Padua Italy
12. Neuromuscular Morphology Unit Nord‐Est/Ile‐de‐France Neuromuscular Reference Center Myology Institute Pitié‐Salpêtrière Hospital Paris France
13. Nord‐Est/Ile‐de‐France Neuromuscular Reference Center Neurology Department Raymond‐Poincaré Hospital Garches France