[1] Univ Manchester, Sch Biol Sci, Div Immunol Immun Infect & Resp Med, Manchester, Lancs, England
[2] Pennine Acute NHS Trust, North Manchester Gen Hosp, Manchester, Lancs, England
[3] McMaster Univ, Dept Med, Div Resp Med, Hamilton, ON, Canada
[4] Manchester Univ Fdn Trust, Wythenshawe Hosp, Manchester, Lancs, England
[5] Univ Leeds, Div Gastroenterol & Surg Sci, Leeds Inst Med Res St Jamess, Leeds, W Yorkshire, England
[6] Mayo Clin, Div Gastroenterol & Hepatol, Jacksonville, FL USA
[7] Mayo Clin, Pulm Med, Jacksonville, FL USA
[8] AstraZeneca, BioPharmaceut R&D, Emerging Innovat, Cambridge, England
[9] AstraZeneca, Macclesfield, Cheshire, England
[10] Johns Hopkins Asthma & Allergy Ctr, Baltimore, MD USA