1. Department of Otolaryngology and Laryngological Oncology, Poznan University of Medical Sciences, Poznan, Poland
2. Department of Otolaryngology and Laryngological Oncology, Heliodor Swiecicki Clinical Hospital, Poznan, Poland
3. Department of Otolaryngology and Laryngological Oncology, Heliodor Swiecicki Clinical Hospital, Poznan, Poland; Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland