1. Aintree University Hospital NHS Foundation Trust, UK
2. Mersey ENT Research Collaborative, UK
3. NHS Grampian, UK
4. Wirral University Teaching Hospital NHS Foundation Trust, UK
5. Mid Cheshire Hospitals NHS Foundation Trust, UK
6. Royal Liverpool and Broadgreen University Hospitals NHS Trust, UK
7. Salford Royal NHS Foundation Trust, UK
8. Warrington and Halton Hospitals NHS Foundation Trust, UK