1. Department of Otorhinolaryngology, Head and Neck Surgery, GROW-School for Oncology and Developmental Biology; Maastricht University Medical Centre; The Netherlands
2. Department of Oral Pathology, Faculty of Dentistry; Gazi University; Ankara Turkey
3. Department of Molecular Cell Biology, GROW-School for Oncology and Developmental Biology; Maastricht University Medical Centre; The Netherlands
4. Department of Pathology, GROW-School for Oncology and Developmental Biology; Maastricht University Medical Centre; The Netherlands
5. Jean-Uhrmacher-Institute for Otorhinolaryngological Research; University of Cologne; Germany
6. Department of Pathology; University of Cologne; Germany
7. Institute for Virology, University of Cologne; Germany
8. Department of Otorhinolaryngology, Head and Neck Surgery; University of Giessen; Germany