1. Department of Plastic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden;
2. Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden;
3. Institute of Neuroscience and Physiology, Speech Language Pathology Unit, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden;
4. Department of Otorhinolaryngology and Audiology, Sahlgrenska University Hospital, Gothenburg, Sweden