1. Department of Otorhinolaryngology ‐ Head and Neck Surgery Erasme University Hospital, Université Libre de Bruxelles Brussels Belgium
2. Department of Otorhinolaryngology ‐ Head and Neck Surgery C.H.U Saint‐Pierre, Université Libre de Bruxelles Brussels Belgium
3. Department of Pathology Erasme University Hospital, Université Libre de Bruxelles Brussels Belgium