1. Department of Neurology Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center Nijmegen The Netherlands
2. Department of Paediatric Neurology Radboud University Medical Center – Amalia Children's Hospital Nijmegen The Netherlands
3. Department of Human Genetics Radboud University Medical Center Nijmegen The Netherlands
4. Department of pathology Radboud University Medical Center Nijmegen The Netherlands
5. Department of Clinical Genetics Amsterdam UMC, University of Amsterdam Amsterdam The Netherlands
6. Department of Neurology Amsterdam University Medical Center Amsterdam The Netherlands
7. Department of Paediatric Neurology Amsterdam University Medical Centers Amsterdam The Netherlands
8. Department of Genetics University Medical Center Groningen, University of Groningen Groningen The Netherlands
9. Department of Neurology, School of Mental Health and Neuroscience Maastricht University Medical Center+ Maastricht The Netherlands
10. Department of Paediatric Neurology, Neuromuscular Service Evelina's Children Hospital, Guy's & St. Thomas' Hospital NHS Foundation Trust London UK
11. Randall Centre for Cell and Molecular Biophysics Muscle Signalling Section, FoLSM, King's College London UK