1. Stem Cell Research Laboratory, NHS Blood and Transplant, John Radcliffe Hospital, Headington, Oxford, United Kingdom.
2. Nuffield Department of Clinical Laboratory Sciences, John Radcliffe Hospital, University of Oxford, Headington, Oxford, United Kingdom.
3. Cardiac Metabolism Research Group, Department of Physiology Anatomy and Genetics, Oxford, United Kingdom.
4. Department of Cardiovascular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom.