1 Department of ENT/Head and Neck Surgery, Queen Elizabeth University Hospital Birmingham, Birmingham, UK.
2 Department of Otolaryngology, Royal Devon and Exeter Hospital, Exeter, UK.
3 Department of Neurosciences, Section of Otolaryngology, University of Padova, Padova, Italy.
4 Department of Neurosciences, Institute of Human Anatomy, University of Padova, Padova, Italy.
5 ENT Department, University Hospital of Ferrara, Ferrara, Italy.
6 Department of Neurosciences, Section of Otolaryngology, University of Padova, Treviso, Italy.
7 Otorhinolaryngology-Head and Neck Surgery, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy.
8 Head and Neck Department, Princess Royal Hospital, Telford, UK.
9 ENT Clinic, Head and Neck Department, Azienda Sanitaria Universitaria Integrata di Trieste, Trieste, Italy.
10 Department of ENT, New Cross Hospital, Wolverhampton, UK.
11 Institue of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK.