1. Division of Molecular Virology, Department of Clinical and Experimental MedicineUniversity of LinköpingLinköping Sweden
2. Division of OtorhinolaryngologyVästervik HospitalVästervik Sweden
3. Division of Neuro and Inflammation Science, Department of Clinical and Experimental MedicineLinköping UniversityLinköping Sweden
4. Department of Otorhinolaryngology in Linköping, Anaesthetics, Operations and Specialty Surgery CenterRegion ÖstergötlandLinköping Sweden
5. Department of MedicineKarolinska InstituteStockholm Sweden