1. Department of ENT Surgery; Auckland City Hospital; Auckland New Zealand
2. National Institute for Health and Care Excellence (2013) Scholar; London England
3. Department of ENT Surgery; Royal London Hospital; London England
4. Dr Foster Intelligence Ltd; London England
5. Dr Foster Unit at Imperial College; Department of Primary Care and Public Health; Imperial College London; London England
6. Department of ENT Surgery; Charing Cross Hospital; London England
7. Department of ENT Surgery; University College Hospital; London England
8. Department of ENT Surgery; Barking Havering and Redbridge NHS Trust; Romford England
9. Academic Surgical Unit; Department of Surgery and Cancer; Imperial College Healthcare Trust; St Mary's Hospital; London England
10. Department of ENT Surgery; St Mary's Hospital; London England