[1] Univ Duisburg Essen, Dept Neurol, Duisburg, Germany
[2] Univ Duisburg Essen, Inst Radiol & Neuroradiol, Essen, Germany
[3] Univ Tubingen, Dept Neuropediat, Tubingen, Germany
[4] Univ Tubingen, Dept Neurol, Hertie Inst Clin Brain Res, Tubingen, Germany
[5] Univ Tubingen, German Ctr Neurodegenerat Dis DZNE, Tubingen, Germany