1. Division of MR Research, Department of Radiology Johns Hopkins University School of Medicine Baltimore Maryland USA
2. F.M. Kirby Research Center for Functional Brain Imaging Kennedy Krieger Institute Baltimore Maryland USA
3. Lee Kong Chian Faculty of Engineering and Science University Tunku Abdul Rahman Malaysia
4. Acute Stroke Programme Oxford University Hospitals NHS Foundation Trust Oxford UK
5. Department of Neurology Johns Hopkins University School of Medicine Baltimore Maryland USA
6. Radiological Sciences, Mental Health and Clinical Neurosciences, School of Medicine University of Nottingham Nottingham UK
7. Nottingham Biomedical Research Centre, Queen's Medical Centre University of Nottingham Nottingham UK
8. Sir Peter Mansfield Imaging Centre, School of Medicine University of Nottingham Nottingham UK