1. Cardiac Metabolism Research Group, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
2. Stem Cell Research Laboratory, National Blood Service, Oxford Centre, John Radcliffe Hospital, Oxford, United Kingdom
3. Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, United Kingdom
4. National Heart and Lung Institute, Imperial College School of Science, Technology and Medicine, London, United Kingdom