RCT=randomised controlled trial. RRT=renal replacement therapy. SOFA=Sequential Organ Failure Assessment. Data for this Review were identified by searches of PubMed and MEDLINE for original research ...

Correspondence to British Thoracic Society, 17, Doughty Street, London WC1N 2PL, UK; bts{at}brit-thoracic.org.uk and Dr Charlotte E Bolton, Nottingham Respiratory Research Unit, University of ...