1. From the Department of Radiology (M.B., L.G.M., L.M.v.d.G., M.A.v.B., S.v.R., L.v.d.W.)
2. Department of Human Genetics (M.B., L.G.M., L.M.v.d.G., L.v.d.W.)
3. Leiden University Medical Center, the Netherlands; and Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston (S.J.v.V., S.M.G.).
4. Department of Pathology (S.G.v.D.)