1. Edinburgh Ear, Nose, and Throat Department, Edinburgh Royal Infirmary; Edinburgh Scotland UK
2. Radiology Department; Edinburgh Royal Infirmary; Edinburgh Scotland UK
3. Glasgow Ear, Nose, and Throat Department; Glasgow Scotland UK
4. School of Psychological Sciences and Health; University of Strathclyde; Glasgow UK
5. South East Scotland Cancer Network (SCAN) Cancer Audit Edinburgh; Scotland UK