Affiliation: | (1) Department of Neurology, University Hospital Nijmegen, P. O. Box 9101, NL-6500 HB Nijmegen, The Netherlands Tel.: +31-24-3613394; Fax: +31-24-3541122; e-mail: A.Verrips@czzoneu.azn.nl, NL;(2) Laboratory of Pediatrics and Neurology, University Hospital Nijmegen, P. O. Box 9101, NL-6500 HB Nijmegen, The Netherlands, NL;(3) Department of Neurology, University Hospital Utrecht, P. O. Box 85500, NL-3508 GA Utrecht, The Netherlands, NL;(4) Central Laboratory for Clinical Chemistry, University Hospital, P. O. Box 30001, NL 9700 RB, Groningen, The Netherlands, NL |