[1] Univ Coll London UCL, UCL, Resp, London, England
[2] Prince Sultan Mil Coll Hlth Sci, Dept Resp Care, Dammam, Saudi Arabia
[3] Univ Oxford, Nuffield Dept Med, Oxford, England
[4] Univ Nottingham, Sch Med, Natl Inst Hlth Res NIHR, Nottingham Biomed Res Ctr BRC,Resp Theme,Translat, Nottingham, England
[5] Patient Representat, Shepton Mallet, England
[6] Pk Med Partnership, Shepton Mallet, England
[7] Frimley Hlth NHS Fdn Trust, Windsor, England
[8] Imperial Coll London, Natl Heart & Lung Inst, London, England
[9] Cent & North West London NHS Fdn Trust, London, England
[10] Univ Birmingham, Inst Inflammat & Ageing, Birmingham, W Midlands, England
[11] Natl Inst Hlth Res Evaluat, Trials & Studies Coordinating Ctr, James Lind Alliance, Southampton, Hants, England
[12] NIHR Southampton BRC, Southampton, Hants, England