N Engl J Med 2015 Apr 17;372(14):1301-11. Epub 2015 Mar 17.
From the Clinical Trials Unit, Intensive Care National Audit and Research Centre (P.R.M., G.S.P., D.A.H., R.J., S.E.H., K.M.R.), Department of Health Services Research and Policy, London School of Hygiene and Tropical Medicine (M.Z.S., R.D.G.), and Faculty of Medicine, Imperial College London (D.B.), Department of Acute Medicine, Chelsea and Westminster Hospital NHS Foundation Trust (D.B.), and Bloomsbury Institute of Intensive Care Medicine, University College London (M.S.), London, the Department of Intensive Care Medicine, University of Birmingham, Birmingham (J.F.B.), Department of Cardiovascular Sciences, University of Leicester, Leicester (T.J.C.), and Nuffield Division of Anaesthetics, University of Oxford, Oxford (J.D.Y.) - all in the United Kingdom; and the Departments of Surgery and Emergency Medicine, Washington University at St. Louis, St. Louis (T.M.O.).