1. From the Department of Neurology, Brain Centre Rudolf Magnus, University Medical Centre Utrecht, the Netherlands (H.v.d.B., G.J.B.)
2. Department of Clinical Neurosciences (A.Z., A.R.S., A.C., B.G.G., C.R.M., E.E.S., R.F.)
3. Department of Radiology (B.G.G., C.R.M., E.E.S., R.F.), University of Calgary, AB, Canada
4. Seaman Family MR Research Centre, Foothills Medical Centre, University of Calgary, AB, Canada (B.G.G., R.F.).