| Affiliation: | 1. Department of Surgical Sciences, Otorhinolaryngology and Head and Neck Surgery, Uppsala University, Uppsala, Sweden;2. Department of Surgical Sciences, Plastic and Maxillofacial Surgery, Uppsala University, Uppsala, Sweden;3. Department of Plastic and Reconstructive Surgery and the Institute for Surgical Research, Oslo University Hospital Rikshospitalet, Oslo, Norway;4. Department of Otorhinolaryngology, Karolinska University Hospital, Stockholm, Sweden;5. Uppsala Clinical Research Centre, Uppsala, Sweden |
