1. Department of Rehabilitation; Via Reva Rehabilitation Center; Apeldoorn the Netherlands
2. Department of Paediatric Rehabilitation Medicine; VU Medical Center; Amsterdam the Netherlands
3. Groot Klimmendaal - Rehabilitation; Arnhem the Netherlands
4. Department of Paediatric Psychology; VU Medical Center; Amsterdam the Netherlands
5. CanChild Centre for Childhood Disability Research; Department of Paediatrics; McMaster University; Hamilton ON Canada
6. Division of Communication Disorders; University of Wyoming Laramie; Laramie WY USA
7. Department of Paediatric Neurology; Maastricht University Medical Center; Maastricht the Netherlands