1. The Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health, London, United Kingdom.
2. National Institute for Health Research, Great Ormond Street Institute of Child Health Biomedical Research Centre, University College London, London, United Kingdom.
3. Centre for Physical Activity and Life Sciences, University of Northampton, Northampton, United Kingdom.
4. John Walton Muscular Dystrophy Research Centre, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom.
5. Department of Pharmacology, University of Oxford, Oxford, United Kingdom.
6. Institut de Myologie, Groupe hospitalier La Pitié Salpétrière, Paris, France.
7. MDUK Oxford Neuromuscular Center, University of Oxford, Oxford, United Kingdom.
8. Division of Paediatrics, Neuromuscular Center, University Hospital and University of Liège, Liège, Belgium.
9. I-Motion, Hopital Trousseau, Paris, France.
10. Radboud University Medical Centre, Nijmegen, Netherlands.
11. Leiden University Medical Centre, Leiden, Netherlands.