1. University of Groningen; University Medical Center Groningen; Department of Paediatrics - Developmental Neurology; Groningen the Netherlands
2. Department of Epidemiology; University of Groningen; University Medical Center Groningen; Groningen the Netherlands
3. Department of Neurology; Radboud University Medical Center; Nijmegen the Netherlands
4. Department of Rehabilitation Medicine; Center for Rehabilitation; University of Groningen; University Medical Center Groningen; Groningen the Netherlands
5. Rehabilitation Center ‘Revalidatie Friesland’; Beetsterzwaag the Netherlands