1. Department of Anaesthesiology and Intensive Care, Gødstrup Hospital, Herning, Denmark
2. Institute for Clinical Medicine, Aarhus University, Aarhus N, Denmark
3. Department of Occupational Therapy and Physiotherapy, Rigshospitalet, Copenhagen University Hospital, Copenhagen Ø, Denmark
4. Faculty of Health, Aarhus University, Aarhus C, Denmark
5. Department of Health & Care, Aarhus Municipality, Aarhus N, Denmark
6. Department of Public Health, Research Unit of General Practice, University of Southern Denmark. J.B, Odense C, Denmark
7. Odense University Hospital, Odense C, Denmark
8. Department of Geriatric Medicine, Aalborg University Hospital, Aalborg, Denmark
9. Centre for Clinical Research, North Denmark Regional Hospital, Hjoerring, Denmark
10. Department of Emergency Medicine and Trauma Center, Aalborg University Hospital, Aalborg, Denmark
11. Danish Center of Particle Therapy, Aarhus University Hospital, Palle Juul-Jensens, Aarhus N, Denmark
12. Department of ORL Head & Neck Surgery and Audiology, Odense University Hospital. J.B., Odense C, Denmark
13. Ear Nose Throat Head & Neck surgery – Gastroenterology (Neurogastroenterology & Motility), Faculty of Medicine, Neurosciences, Experimental Otorhinolaryngology, Deglutology - University Hospitals Leuven, University of Leuven, Leuven, Belgium
14. Department of Clinical Medicine and Centre for Clinical Research, Aalborg University and North Denmark Regional Hospital, Hjoerring, Denmark