1. UCL Ear Institute, University College London London UK
2. Smell and Taste Clinic, Department of Otolaryngology TU Dresden Dresden Germany
3. Centre for Olfactory Research Applications (CORA), IP School of Advanced Study London UK
4. ENT Department Pinderfields Hospital, Mid Yorkshire Hospitals NHS Trust Wakefield UK
5. Skull Base Unit, ENT Department Hospital Clinic Barcelona University Barcelona Spain
6. CIBER of Respiratory diseases (CIBERES) Health Institute Carlos III Madrid Spain
7. Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) Barcelona Spain
8. Department of Otolaryngology, Head and Neck Surgery Biruni University School of Medicine Istanbul Turkey
9. Royal National and ENT Hospital (RNENT) London UK
10. Department of Otolaryngology Newcastle upon Tyne Hospitals NHS Foundation Trust Newcastle upon Tyne UK
11. Department of Otorhinolaryngology, Flavour Clinic University Clinic for Flavour, Balance and Sleep, Regional Hospital Gødstrup Herning Denmark
12. Department of Clinical Medicine Flavour Institute, Aarhus University Aarhus Denmark
13. ENT Department Guy's and St Thomas' NHS Trust London UK
14. Rhinology‐Olfactory Unit, Department of Otorhinolaryngology‐Head and Neck Surgery University Hospital of Geneva Medical School Geneva Switzerland
15. ENT Department Cliniques Universitaires Saint‐Luc Brussels Belgium
16. Institute of Neuroscience, Université Catholique de Louvain Brussels Belgium
17. 2nd Academic Department, Smell and Taste Clinic Aristotle University of Thessaloniki Thessaloniki Greece
18. Department of Otorhinolaryngology Jikei University School of Medicine Tokyo Japan
19. Rhinology Unit and Smell Clinic, ENT Department Hospital Clinic University of Barcelona Barcelona Spain
20. Norwich Medical School Norwich UK
21. The Norfolk Smell and Taste Clinic Norfolk and Waveney ENT Service, James Paget and Norfolk and Norwich University Hospitals Norfolk UK
22. Fifth Sense London UK
23. Department of Otorhinolaryngology and Head and Neck Surgery Regional Hospital Pardubice Pardubice Czech Republic
24. Faculty of Health Studies University of Pardubice Pardubice Czech Republic