1. Department
of Neurology, Erasmus MC University Medical Center, Rotterdam 3015 GE, The Netherlands
2. Department
of Clinical Chemistry, Erasmus MC University Medical Center, Rotterdam 3015 GE, The Netherlands
3. Department
of Laboratory Medicine, Radboud University Medical Center, Nijmegen 6525 GA, The Netherlands
4. Department
of Pathology, Radboud University Medical Center, Nijmegen 6525 GA, The Netherlands