1. Department of Neurology University of Groningen, University Medical Center Groningen Groningen The Netherlands
2. Department of Neurology, Subdepartment of Clinical Neuropsychology University of Groningen, University Medical Center Groningen Groningen The Netherlands
3. Department of Clinical & Developmental Neuropsychology University of Groningen Groningen The Netherlands
4. Department of Medical Psychology Deventer Hospital Deventer The Netherlands