[1] Univ Cologne, Fac Med, Dept Neurol, Cologne, Germany
[2] Univ Cologne, Univ Hosp, Cologne, Germany
[3] Ludwig Maximilians Univ Munchen, Friedrich Baur Inst, Dept Neurol, Munich, Germany
[4] Med Genet Ctr, Munich, Germany
[5] Univ Cologne, Fac Med, Dept Neuropathol, Cologne, Germany
[6] Univ Cologne, Fac Med, Ctr Rare Dis, Cologne, Germany