[1] Univ Munster, Dept Neurol, D-48149 Munster, Germany
[2] Univ Munster, Leibniz Inst Atherosclerosis Res, D-48149 Munster, Germany
[3] Univ Antwerp VIB, Dept Mol Genet, B-2020 Antwerp, Belgium
[4] Univ Washington, Dept Pediat, Div Genet & Dev Med, Seattle, WA 98195 USA
[5] Univ Munster, Dept Pediat Neurol, D-4400 Munster, Germany
[6] Univ Washington, Dept Neurol, Seattle, WA 98195 USA
[7] Vet Affairs Puget Sound Hlth Care Syst, Seattle, WA USA
[8] Univ Kuopio, Dept Paediat, FIN-70211 Kuopio, Finland
[9] Kuopio Univ Hosp, Dept Clin Genet, SF-70210 Kuopio, Finland
[10] Autonome Univ Barcelona, Hosp Mar, Dept Neurol, Barcelona, Spain
[11] Hosp Cruces, Div Child Neurol, Baracaldo, Basque Country, Spain
[12] Univ Antwerp Hosp, Div Neurol, Antwerp, Belgium