1. Généthon Evry France
2. Université Paris‐Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951 Evry France
3. MDUK Oxford Neuromuscular Center, Department of Paediatrics, University of Oxford, UK & Division of Child Neurology, Centre de Référence des Maladies Neuromusculaires, Department of Paediatrics University Hospital of Liège & University of Liège Liège Belgium
4. NIHR Great Ormond Street Hospital Biomedical Research Centre and Great Ormond Street Institute of Child Health University College London London UK