[1] Univ Giessen, Dept Child Neurol, Giessen, Germany
[2] Tech Univ Dresden, Univ Hosp Carl Gustav Carus, Dept Neurol, Dresden, Germany
[3] Univ Ulm, Dept Neurol, Ulm, Germany
[4] Munster Univ Hosp, Dept Pediat Neurol, Munster, Germany
[5] Friedrich Alexander Univ Erlangen Nurnberg, Div Pediat Neurol, Dept Pediat, Erlangen, Germany
[6] Univ Bonn, Dept Neurodegenerat Dis & Gerontopsychiat Neurol, Med Ctr, Bonn, Germany
[7] Heidelberg Univ Hosp, Dept Neurol, Heidelberg, Germany
[8] Roche Pharma AG, Grenzach Wyhlen, Germany
[9] Univ Hosp Essen, Dept Neurol, Essen, Germany