1. Medical Sciences, Institute of Health; University of Cumbria; Lancaster UK
2. Health Innovation Campus and Centre for Health Futures; Lancaster University; Lancaster UK
3. Department of Medicine; McMaster University; Hamilton Canada
4. Lancaster UK
5. Cochrane Airways, Population Health Research Institute; St George's, University of London; London UK
6. Review Production and Quality Unit, Editorial & Methods Department; Cochrane Central Executive; London UK
7. Respiratory Medicine Unit, Nuffield Department of Medicine; University of Oxford; Oxford UK
8. East Lancashire Hospitals NHS Trust; Blackburn UK