1. Health Technology Assessment, Health Information and Quality Authority, Dublin, Ireland
2. Centre for Primary Care and Public Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
3. RCSI Department of General Practice, Royal College of Surgeons in Ireland, Dublin, Ireland
4. Asthma UK Centre for Applied Research, Allergy and Respiratory Research Group, Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Scotland, Edinburgh, UK