1. Department of Otorhinolaryngology and Cervicofacial Surgery, University Medical Centre Ljubljana , Ljubljana , Slovenia
2. Faculty of Medicine, University of Ljubljana , Ljubljana , Slovenia
3. Department of Experimental Oncology, Institute of Oncology Ljubljana , Ljubljana , Slovenia
4. Faculty of Pharmacy, University of Ljubljana , Ljubljana , Slovenia
5. Faculty of Health Sciences, University of Primorska , Izola , Slovenia
6. Faculty of Health Sciences, University of Ljubljana , Ljubljana , Slovenia
7. Department of Radiation Oncology, Institute of Oncology Ljubljana , Ljubljana , Slovenia