1. Department of Pharmaceutical Biochemistry; Poznań University of Medical Sciences; Poznań Poland
2. Department of Mutagenesis; Institute of Human Genetics; Polish Academy of Sciences; Poznań Poland
3. Department of Otorhinolaryngology; Head and Neck Surgery and Department of Medical Biochemistry; Turku University Central Hospital and Turku University; Turku Finland
4. Department of Otolaryngology and Laryngeal Oncology; Poznań University of Medical Sciences; Poznań Poland