1. Division of Child Neurology, Reference Center for Neuromuscular Diseases, Department of Paediatrics University Hospital Liege & University of Liege Belgium
2. Department of Health Services Research, Care and Public Health Research Institute Maastricht University Maastricht the Netherlands
3. Neuromuscular Reference Center and Paediatric Neurology Department, Hôpital Universitaire des Enfants Reine Fabiola Université Libre de Bruxelles Brussels Belgium
4. Unit of Neuromuscular and Neurodegenerative Disorders, Department of Neurosciences, Istituto di Ricovero e Cura a Carattere Scientifico Bambino Gesù Children's Hospital Rome Italy
5. Institute of Myology GH Paris France
6. Biochemical Genetics Lab, Department of Human Genetics, CHU de Liège University of Liege Liege Belgium
7. Muscular Dystrophy UK Neuromuscular Centre, Department of Paediatrics University of Oxford Oxford UK