1. Department of Otolaryngology and Laryngological Oncology, Nicolaus Copernicus University in Torun, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Poland
2. Department of Otolaryngology and Laryngological Oncology, Nicolaus Copernicus University in Torun, Ludwik Rydygier Collegium Medicum in Bydgoszcz, ENT Scientific Club at the Department of Otolaryngology and Laryngological Oncology, Collegium Medicum, Bydgoszcz, Poland