1. Department of Otolaryngology University of Amsterdam Amsterdam Netherlands
2. Department of Otorhinolaryngology Hospital Clinic, IDIBAPS, Universitat de Barcelona, CIBERES Barcelona Catalonia Spain
3. Department of Otorhinolaryngology: Head and Neck Surgery, Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania USA
4. Norwich Medical School University of East Anglia Norwich UK
5. Norfolk and Waveney Ear Nose and Throat Service James Paget University Hospitals NHS Foundation Trust Great Yarmouth UK
6. ENT Unit, Department of Neuroscience Azienda Ospedaliero‐Universitaria Pisana Pisa Italy
7. Department of Medicine and Department of Otolaryngology Northwestern University Feinberg School of Medicine Chicago Illinois USA
8. Service d'ORL et de Chirurgie Cervico‐faciale Centre, Hospitalier Intercommunal de Creteil, et APHP, Groupe Hospitalier Henri Mondor‐Albert Chenevier Universite Paris‐Est Creteil Creteil France
9. Clinical Sciences, Respiratory GSK, GSK House Brentford Middlesex UK
10. Clinical and Experimental Sciences, Faculty of Medicine University of Southampton and NIHR Respiratory Biomedical Research Unit, Southampton General Hospital Southampton UK
11. Global Respiratory Franchise GSK House Brentford Middlesex UK
12. Epidemiology, Value Evidence and Outcomes GSK House, Brentford Middlesex UK
13. Clinical Statistics GSK House, Brentford Middlesex UK
14. Respiratory Medical Franchise GSK Research Triangle Park North Carolina USA
15. Department of Rhinology, Royal National ENT Hospital University College London Hospitals NHS Foundation Trust London UK
16. UCL Ear Institute, University College London London UK