1. Department of Neurosciences, Section of OtolaryngologyUniversity of Padova Padova Italy
2. Department of OtolaryngologyGuy's hospital London UK
3. Department of OtolaryngologyRoyal Devon and Exeter Hospital Exeter UK
4. Head and Neck DepartmentOspedale di Bolzano Bolzano Italy
5. Infections and Cancer Biology GroupInternational Agency for Research on Cancer Lyon France