1. Institute of Clinical Sciences, Department of Orthopaedics, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
2. Department of Orthopaedic Surgery, Region Västra Götaland Sahlgrenska University Hospital Gothenburg Sweden
3. Department of Otorhinolaryngology, Region Västra Götaland Sahlgrenska University Hospital Gothenburg Sweden
4. Department of Otorhinolaryngology, Head and Neck Surgery Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg Gothenburg Sweden
5. Department of Surgery Östra Region Västra Götaland, Sahlgrenska University Hospital Gothenburg Sweden
6. Institute of Health and Care Sciences, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
7. Department of Surgery Sahlgrenska, Region Västra Götaland Sahlgrenska University Hospital Gothenburg Sweden