1. Aintree University Hospital Liverpool University Hospitals NHS Foundation Trust Liverpool UK
2. Mersey ENT Research Collaborative Liverpool UK
3. Arrowe Park Hospital Wirral University Teaching Hospitals NHS Foundation Trust Wirral UK
4. Countess of Chester Hospital NHS Foundation Trust Chester UK
5. Leighton Hospital Mid Cheshire Hospitals NHS Foundation Trust Crewe UK
6. Royal Liverpool Hospital Liverpool University Hospitals NHS Foundation Trust Liverpool UK
7. Warrington Hospital Warrington and Halton Teaching Hospitals NHS Foundation Trust Warrington UK