1. Cochrane Airways, Population Health Research Institute; St George's, University of London; London UK
2. Division of Infection, Immunity and Respiratory Medicine; The University of Manchester, Manchester Academic Health Science Centre; Manchester UK
3. North West Lung Centre; Wythenshawe Hospital, Manchester University Foundation Trust; Manchester UK
4. Centre for Reviews and Dissemination; University of York; York UK
5. Clinical Pharmacology; St George's, University of London; London UK