1. Oxford Centre for Clinical Magnetic Resonance Research (OCMR) Division of Cardiovascular Medicine, Radcliffe Department of Medicine University of Oxford Oxford United Kingdom
2. Department of Imaging Methods Institute of Measurement Science Slovak Academy of Sciences Bratislava Slovakia
3. Department of Physiology, Anatomy and Genetics University of Oxford Oxford United Kingdom
4. Wolfson Brain Imaging Centre University of Cambridge Cambridge United Kingdom
5. High Field MR Center, Center for Medical Physics and Biomedical Engineering Medical University of Vienna Vienna Austria