1. Division of Paediatric and Adolescent Medicine Oslo University Hospital Oslo Norway
2. Institute of Clinical Medicine University of Oslo Oslo Norway
3. Norwegian Advisory Unit on Long‐term Mechanical Ventilation, Thoracic Department Haukeland University Hospital Bergen Norway
4. Faculty of Health and Social Sciences Western Norway University of Applied Science Bergen Norway
5. Centre de Référence Neuromusculaire, Département de Neurologie Cliniques Universitaires de Bruxelles, Hôpital Erasme, Université Libre de Bruxelles Brussels Belgium
6. Department of Paediatrics Stavanger University Hospital HF Stavanger Norway
7. Department of Clinical Science University of Bergen Bergen Norway
8. Department of Paediatrics Haukeland University Hospital Bergen Norway
9. Norwegian National Register for Long‐Term Mechanical Ventilation, Thoracic Department Haukeland University Hospital Bergen Norway