1. From the Department Clinical Neurosciences (E.C., P.S.J., J.A., J.V.G., E.A.W., J.C.B.), Cambridge University, Cambridge, UK; CFIN (I.K.-M., K.M., L.R., N.H., L.O.), Aarhus University, Aarhus, Denmark; Hopital Neurologique (T.H.C., N.N.), Creatis UMR 5515-Inserm U630, Lyon, France; the Neuroradiology Department (S.S., J.F.), University Medical Center, Hamburg, Germany; Wolfson Brain Imaging Centre (T.D.F., T.A.C., F.I.A.), Cambridge University, Cambridge, UK; and INSERM U894 (J.C.B.), Paris, France.