1. Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Krakow 1 , 30 Mickiewicza Av, 30-059 Krakow, Poland
2. Department of Laryngology, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice 2 , Poniatowskiego 15, 40-055 Katowice, Poland