1. The John Walton Muscular Dystrophy Research Centre, Translational and Clinical Research Institute Newcastle University and Newcastle Hospitals NHS Foundation Trust Newcastle upon Tyne UK
2. NMR Laboratory, Neuromuscular Investigation Center Institute of Myology Paris France
3. NMR Laboratory CEA/DRF/IBFJ/MIRCen Paris France
4. Center for Translational Science, Division of Biostatistics and Study Methodology Children's National Health System Washington DC USA
5. Pediatrics, Epidemiology and Biostatistics George Washington University Washington DC USA
6. Magnetic Resonance Centre, Translational and Clinical Research Institute Newcastle University Newcastle upon Tyne UK
7. Jain Foundation Seattle WA USA
8. Department of Neurology and Neurological Sciences Stanford University School of Medicine Stanford CA USA
9. The Children's Hospital at Westmead and The University of Sydney Sydney NSW Australia
10. Department of Neurology Children's National Health System Washington DC USA
11. National Institutes of Health (NINDS) Bethesda MD USA
12. Service des maladies neuromusculaire et de la SLA Hôpital de La Timone Marseille France
13. Department of Neurology Washington University School of Medicine St. Louis MO USA
14. Friedrich‐Baur‐Institute, Department of Neurology Ludwig‐Maximilians‐University of Munich Munich Germany
15. Neuromuscular Unit, Department of Neurology Hospital U. Virgen del Rocío/Instituto de Biomedicina de Sevilla Sevilla Spain
16. Centre de référence des maladies neuromusculaires Institut de Myologie, AP‐HP, Sorbonne Université, Hôpital Pitié‐Salpêtrière Paris France
17. Department of Neurology National Center Hospital, National Center of Neurology and Psychiatry Tokyo Japan
18. Neuroscience Institute Carolinas Neuromuscular/ALS‐MDA Center, Carolinas HealthCare System Charlotte NC USA
19. Department of Neuroscience University of Padova Padua Italy
20. The Abigail Wexner Research Institute at Nationwide Children's Hospital Columbus OH USA
21. Université Paris‐Saclay, CEA, DRF, Service Hospitalier Frederic Joliot Orsay France
22. Neuromuscular Disorders Unit, Neurology Department Hospital de la Santa Creu i Sant Pau Barcelona Spain
23. Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) Madrid Spain