1. Department of Otorhinolaryngology, Linköping University Hospital, Linköping, Sweden;
2. Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden;
3. Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden;
4. Sheikh Khalifa Medical City, Ajman, United Arab Emirates;
5. Department of Otorhinolaryngology, Region Jönköping County, Jönköping, Sweden;
6. Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden