1. Department of Otolaryngology - Head & Neck Surgery; Queen's Hospital; Romford UK
2. National Institute of Health and Care Excellence (2013 Scholar); London UK
3. Dr Foster Intelligence Ltd; London UK
4. Department of Clinical Coding; Charing Cross Hospital; London UK
5. Academic Department of Surgery; Imperial College London; London UK
6. Department of Clinical Oncology; Charing Cross Hospital; London UK
7. Department of Oral & Maxillofacial Surgery; St Richard's Hospital; Chichester UK
8. Department of Plastic & Reconstructive Surgery; Charing Cross Hospital; London UK
9. The Royal National Throat Nose and Ear Hospital; London UK
10. Department of Otolaryngology - Head & Neck Surgery; Royal London Hospital; London UK
11. Dr Foster Unit at Imperial College; Department of Primary Care and Public Health; School of Public Health; Imperial College London; London UK
12. Department of Otolaryngology - Head & Neck Surgery; Charing Cross Hospital; London UK