1. Department of Audiology and Neurotology, Karolinska University Hospital, Stockholm, Sweden
2. Swedish Strategic Programme against Antibiotic Resistance, Lund, Sweden
3. Department of Otorhinolaryngology, Halmstad Hospital, Halmstad, Sweden
4. Swedish Council on Technology Assessment in Health Care, Stockholm, Sweden
5. Department of Otorhinolaryngology, Östersund Hospital, Östersund, Sweden
6. Billingens Health Care Centre, Skövde, Sweden