1. Norwich Medical School; University of East Anglia; Norfolk UK
2. The Smell & Taste Clinic; ENT Department; James Paget University Hospital NHS Foundation Trust; Gorleston Norfolk UK
3. ENT Department; The Ipswich Hospital NHS Foundation Trust; Ipswich Suffolk UK
4. ENT Department; University Hospitals of Leicester NHS Foundation Trust; Leicester UK
5. The Smell & Taste Clinic; Department of ORL; Technical University; Dresden Germany