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The acknowledgement section for this article should read:

Principal investigators Dr Justin Pepperell, Dr Chris Davies, Prof. John Fleetham, Dr Mark Elliot, Dr Renata Riha, Dr Andrew Cummin, Dr Lee Dowson, Dr John White, Dr Anita Simmonds, Prof. Mary Morrell

Trial Steering Committee members Dr Ian Smith

Data monitoring committee Prof. Tim Peto, Prof. John Gibson

Advisors Prof. Peter Rothwell, Prof. Rory Collins

Research staff Barbara Winter, Rebecca Mason, Massimilliano Siccoli, Jacqui Webb, Suber Valmiki, Elizabeth Thorne, Nurit Fox, Margaret Chapman, Marjorie Vennelle, Craig Armstrong, Loiuse Spragg, Ramesh Ghiassi, Gillian Twigg, Neil Ward, Jayne Pateraki

Trial management Emma Hedley, Nicky Crosthwaite, Claire Manners, Magda Laskawiec

Data management Thomas Penning, Anna Bara, Peter Stradling, Phillipa Davies, Jenny Stradling, Adam Smith, Alice Roberts

We would like to acknowledge the support of the NIHR Biomedical Research Centre, Oxford, the British Heart Foundation, London, the Oxfordshire Health Services Research Committee, Oxford and Resmed, Abingdon.