1. Ear, Nose and Throat (ENT) Department, James Paget University Hospital, James Paget University Hospitals NHS Foundation Trust, Great Yarmouth NR31 6LA, UK
2. Norwich Medical School, University of East Anglia, Norwich NR4 7TJ, UK
3. Fifth Sense, Unit 2, Franklins House, Wesley Lane, Bicester OX26 6JU, UK