[1] Erasmus MC, Dept Neurol, NL-3000 CA Rotterdam, Netherlands
[2] St Elizabeth Hosp, Dept Neurol, Willemstad, Curacao, Netherlands
[3] Elkerliek Ziekenhuis, Dept Neurol, Helmond, Netherlands
[4] Canisius Wilhelmina Ziekenhuis, Dept Neurol, Nijmegen, Netherlands
[5] Med & Publ Hlth Serv GGD, Epidemiol & Res Unit, Willemstad, Curacao, Netherlands
[6] Spaarne Ziekenhuis, Dept Neurol, Hoofddorp, Netherlands