[1] Oxford Univ Hosp NHS Fdn Trust, Oxford Ctr Resp Med, Churchill Hosp Site, Oxford OX3 7LJ, England
[2] Univ Oxford, Oxford Resp Trials Unit, Oxford, England
[3] Univ Oxford, Nuffield Dept Orthopaed Rheumatol & Musculoskelet, Ctr Stat Med, Oxford, England
[4] Sir Charles Gairdner Hosp, Dept Resp Med, Perth, WA, Australia
[5] Stellenbosch Univ, Div Pulmonol, Dept Med, Cape Town, South Africa
[6] Blackpool Teaching Hosp NHS Fdn Trust, Blackpool, England
[7] Univ Hosp Plymouth NHS Trust, Plymouth, Devon, England
[8] Victoria Hosp, NHS Fife, Kirkcaldy, Scotland
[9] Shrewsbury & Telford Hosp NHS Trust, Shrewsbury, Salop, England
[10] Guys & St Thomas NHS Fdn Trust, London, England
[11] Great Western Hosp NHS Fdn Trust, Swindon, Wilts, England
[12] Univ Hosp South Manchester NHS Fdn Trust, Manchester, Lancs, England
[13] Hull & East Yorkshire Hosp NHS Trust, Kingston Upon Hull, N Humberside, England
[14] Gloucestershire Hosp NHS Fdn Trust, Cheltenham, Glos, England
[15] Sherwood Forest Hosp NHS Fdn Trust, Mansfield, England
[16] Univ Hosp North Midlands NHS Trust, Stoke On Trent, Staffs, England
[17] St Georges Univ London, Inst Infect & Immun, London, England
[18] York Teaching Hosp NHS Fdn Trust, York, N Yorkshire, England
[19] Taunton & Somerset NHS Fdn Trust, Taunton, Somerset, England
[20] Derby Teaching Hosp NHS Fdn Trust, Derby, England
[21] Johns Hopkins Univ, Div Pulm & Crit Care Med, Baltimore, MD USA
[22] Vanderbilt Univ, Sch Med, Div Allergy Pulm & Crit Care Med, Vanderbilt Ingram Canc Ctr, Nashville, TN USA
[23] Dartford & Gravesham NHS Trust, Dartford, England
[24] Calderdale & Huddersfield NHS Fdn Trust, Huddersfield, W Yorkshire, England
[25] Northern Devon Healthcare NHS Trust, Barnstaple, England
[26] Kings Coll Hosp NHS Fdn Trust, London, England
[27] Univ Bristol, Acad Resp Unit, Bristol, Avon, England
[28] Alexandria Univ, Chest Dis Dept, Fac Med, Alexandria, Egypt
[29] Lancashire Teaching Hosp NHS Fdn Trust, Preston, Lancs, England
[30] Univ Hosp Ayr, NHS Ayrshire & Arran, Ayr, Scotland
[31] Buckinghamshire Healthcare NHS Trust, Amersham, England
[32] United Lincolnshire Hosp NHS Trust, Lincoln, England
[33] Royal Wolverhampton Hosp NHS Trust, Wolverhampton, England
[34] Univ Hosp Wales, Cardiff, Wales
[35] Univ Oxford, Nuffield Dept Primary Care Hlth Sci, Oxford, England
[36] UCL, Inst Global Hlth, London, England
[37] Oxford NIHR Biomed Res Ctr, Oxford, England