1. Lane Fox Unit, Guy’s and St Thomas’ NHS Foundation Trust, London, England2Asthma, Allergy, and Lung Biology, King’s College London, London, England
2. MRC Clinical Trials Unit at University College London, Institute of Clinical Trials and Methodology, London, England
3. Lane Fox Unit, Guy’s and St Thomas’ NHS Foundation Trust, London, England
4. Respiratory Medicine, Northumbria Healthcare NHS Foundation Trust, Newcastle, England5Institute of Cellular Medicine, Newcastle University, Newcastle, England
5. School of Aging and Chronic Disease, University of Liverpool, Liverpool, England
6. Respiratory Medicine, Royal Wolverhampton NHS Trust, Wolverhampton, England
7. Respiratory Medicine, Aintree University Hospital, Liverpool, England
8. Respiratory Medicine, Newcastle University, Newcastle, England
9. Respiratory Medicine, Plymouth Hospital NHS Trust, Plymouth, England
10. Respiratory Medicine, University College London, Royal Free Campus, London, England
11. Respiratory Medicine, Swansea University, Swansea, England
12. Respiratory Medicine, Heart of England NHS Trust, Birmingham, England
13. Oxford NIHR Biomedical Research Centre, Oxford University and NHS Foundation Trust, Oxford, England
14. Respiratory Support and Centre, Papworth Hospital, Cambridge, England
15. Respiratory Medicine, Taunton and Somerset NHS Trust, Taunton, England
16. NIHR Respiratory Biomedical Research Unit, Royal Brompton and Harefield NHS Foundation Trust and Imperial College, London, England
17. Department of Respiratory Medicine, Leeds University Hospital, Leeds, England