1. From the Oxford Centre for Clinical Magnetic Resonance Research, Radcliffe Department of Medicine (O.J.R., A.A., J.J.J.J.M., J.Y.C.L., A.J.M.L., M.A.P., C.T., S.N., D.J.T.), University of Oxford, United Kingdom
2. Department of Physiology, Anatomy and Genetics (J.J.J.J.M., J.Y.C.L., D.J.T.), University of Oxford, United Kingdom
3. Department of Physics (J.J.J.J.M.), University of Oxford, United Kingdom
4. School of Life Sciences, Coventry University, United Kingdom (M.S.D.)
5. Sunnybrook Research Institute, Toronto, Canada (A.Z.L.)
6. Department of Radiology (F.A.G., J.T.G.), University of Cambridge, United Kingdom.
7. Cancer Research UK Cambridge Institute (K.M.B.), University of Cambridge, United Kingdom.