1. Department of Physiotherapy, Faculty of Health Sciences Oslo Metropolitan University Oslo Norway
2. Children's Surgical Department, Division of Head, Neck and Reconstructive Surgery Oslo University Hospital Oslo Norway
3. Department for Interdisciplinary Health Sciences, Faculty of Medicine University of Oslo Oslo Norway
4. Department of Occupational Therapy, Prosthetics and Orthotics, Faculty of Health Sciences Oslo Metropolitan University Oslo Norway
5. Department of Physical Medicine & Rehabilitation Oslo University Hospital Oslo Norway
6. Faculty of Health Studies VID Specialized University Sandes Norway