[1] Univ Basel, Univ Childrens Hosp UKBB, Dept Pulmonol, Basel, Switzerland
[2] Imperial Coll London, Natl Heart & Lung Inst, London, England
[3] Univ Amsterdam, Amsterdam UMC, Dept Resp Med, Amsterdam, Netherlands
[4] Univ Southampton, Fac Med, Clin & Expt Sci & Human Dev & Hlth, Southampton, Hants, England
[5] Univ Hosp Southampton NHS Fdn Trust, NIHR Southampton Biomed Res Ctr, Southampton, Hants, England
[6] ELF, U BIOPRED Patient Input Platform, Sheffield, S Yorkshire, England
[7] Univ Bern, Childrens Univ Hosp Bern, Dept Paediat Resp Med, Bern, Switzerland
[8] GSK, Resp Therapeut Unit, London, England
[9] AstraZeneca BioPharmaceut R&D, Resp Global Med Dev, Gothenburg, Sweden