Where will the study be carried out?
The study is taking place at 17 Ear, Nose and Throat outpatient clinics, district and teaching hospitals in Scotland, England and Wales.
Please note all links on this page will take you to external NHS trust websites.
The following NHS sites recruited patients to the NAIROS trial:
Birmingham (Queen Elizabeth Hospital)
Carlisle (Cumberland Infirmary)
Darlington (Memorial Hospital/University Hospital of North Durham)
Great Yarmouth (James Paget University Hospital)
Lanarkshire (Monklands Hospital)
Newport (Royal Gwent Hospital)