1. Liverpool Head and Neck Centre/School for Health Sciences University of Liverpool, Liverpool UK
2. Head and Neck Cancer Centre and Research Department of Behavioural Science & Health University College Hospitals London University College London London UK
3. National Centre for Airway Reconstruction Department of Otolaryngology, Head and Neck Surgery Imperial College Healthcare NHS Trust London UK
4. Department of Surgery and Cancer Imperial College London UK
5. Department of Speech, Voice and Swallowing The Royal Marsden NHS Foundation Trust London UK
6. Department of Speech, Voice and Swallowing, ENT Outpatients Newcastle Upon Tyne Hospitals NHS Trust Newcastle Upon Tyne UK
7. Wythenshawe Hospital Manchester University NHS Foundation Trust University of Manchester NIHR Manchester Biomedical Research Centre Northwest Lung Centre Manchester UK
8. Department of Ear, Nose and Throat, Queens Medical Centre Nottingham University Hospitals NHS Trust Nottingham UK
9. Oxford Institute of Nursing, Midwifery and Allied Health Research Faculty of Health & Life Sciences Oxford Brookes University Oxford UK