1. Neuromuscular Reference Center, Department of Paediatrics, University Hospital Liège & University of Liège, Belgium
2. Division of Child Neurology, Centre de Références des Maladies Neuromusculaires, Department of Pediatrics, University Hospital Liège & University of Liège, Liège, Belgium
3. Department of Pediatric Neurology, ‘Alexandru Obregia’ Psychiatry Hospital, Bucharest, Romania
4. MDUK Neuromuscular Center, Department of Paediatrics, University of Oxford, Oxford, UK
5. Division of Child Neurology, Centre de Références des Maladies Neuromusculaires, Department of Pediatrics, University Hospital Liège & University of Liège, 4000 Liège, Belgium