Background Despite exacerbations of chronic obstructive pulmonary disease (COPD) being both common and often fatal, accurate prognostication of patients hospitalised with an exacerbation is difficult.

Memorial Hospital of Rhode Island and Brown University, Pawtucket, Rhode Island, USA Correspondence to Dr F Dennis McCool, Pulmonary, Critical Care and Sleep Medicine, Memorial Hospital of Rhode ...

Hunter Medical Research Institute, Department of Respiratory and Sleep Medicine, John Hunter Hospital, Newcastle, NSW, Australia Correspondence to: Dr P G Gibson Hunter Medical Research Institute, ...

Lung Investigation Unit, Queen Elizabeth Hospital, Birmingham B15 2TH, UK Correspondence to: Professor R A Stockley Lung Investigation Unit, Nuffield House, Queen Elizabeth Hospital, Birmingham B15 ...

3 Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan Correspondence to Dr Mei-Shu Lai, Graduate Institute of Epidemiology and Preventive Medicine, College of Public ...

Correspondence to Nina Leggett, Department of Critical Care, The University of Melbourne, Parkville, Victoria, Australia; nleggett{at}student.unimelb.edu.au; A/Prof Kimberley Joy Haines; ...

Correspondence to Professor Rachel C Chambers, Centre for Inflammation and Tissue Repair, Division of Medicine, University College London, London WC1E 6JF, UK; r.chambers{at}ucl.ac.uk ...

Background Primary Ciliary Dyskinesia (PCD) is a chronic condition that causes reduced mucociliary clearance and mainly affects the respiratory system. PCD currently has no cure and is managed by ...