1. Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden;
2. Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden;
3. Capio ENT Globen and CFTK, Capio Specialist Clinics, Stockholm, Sweden;
4. ENT Unit, Research Laboratory, Sophiahemmet University, Stockholm, Sweden;
5. Department of Clinical Sciences and Technology, Karolinska Institutet, Stockholm, Sweden;
6. Department of ENT, Karolinska University Hospital, Stockholm, Sweden