1. Department of Otorhinolaryngology Head and Neck Surgery, Region Västra Götaland, NU-Hospital Group , Trollhättan , Sweden
2. Department of Otorhinolaryngology, Head and Neck Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
3. Institute of Biomedicine, Department of Infectious Diseases, The Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
4. RISE Research Institutes of Sweden, Bioscience and Materials , Gothenburg , Sweden
5. Department of Clinical Microbiology, Sahlgrenska University Hospital , Gothenburg , Sweden