1. Department of Clinical Neurophysiology, Medical Imaging Centre, Pirkanmaa Hospital District, Tampere, Finland;
2. Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland;
3. Faculty of Information Technology and Communication Sciences, Tampere University, Tampere, Finland;
4. Department of Plastic Surgery, Helsinki University Hospital, Helsinki University, Helsinki, Finland;
5. Department of Otorhinolaryngology, Tampere University Hospital, Tampere, Finland