[1] Univ Med Ctr, Erasmus MC, Dept Neurol, Rotterdam, Netherlands
[2] Haga Hosp, Dept Neurol, The Hague, Netherlands
[3] Univ Med Ctr, Erasmus MC, Dept Neurol & Immunol, Rotterdam, Netherlands
[4] Albert Schweitzer Hosp, Dept Neurol, Dordrecht, Netherlands