1. MDUK Oxford Neuromuscular Centre, Department of Paediatrics, University of Oxford, Oxford, United Kingdom
2. Adult Neurology Department, Citadelle Hospital, Liège, Belgium
3. Neuromuscular Centre, Division of Paediatrics, University and University Hospital of Liège, Liège, Belgium
4. MDUK Oxford Neuromuscular Centre, Department of Paediatrics, University of Oxford & NIHR Oxford Biomedical Research Centre, Oxford, United Kingdom