Affiliation: | 1.Otolaryngology Registrars, Department of Otolaryngology, Head and Neck Surgery, Glasgow Royal Infirmary, Glasgow G4 OSF, UK;2.Consultant Anaesthetist, Queen Elizabeth University Hospital, Glasgow G51 4TF, UK;3.Consultant Otolaryngology Head and Neck Surgeon, Glasgow Royal Infirmary, Glasgow G4 OSF, UK |