1. Department of Otorhinolaryngology; Kuopio University Hospital; Kuopio Finland
2. Department of Otorhinolaryngology, Faculty of Health Sciences, Institute of Clinical Medicine; University of Eastern Finland; Kuopio Finland
3. School of Medicine, Faculty of Health Sciences; University of Eastern Finland; Kuopio Finland
4. Pihlajalinna Ite; Joensuu Finland
5. Heart Center; Kuopio University Hospital; Kuopio Finland