1. Center for Rehabilitation and Northern Center for Health Care Research, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
2. Rehabilitation Center ‘Revalidatie Friesland’, Beetsterzwaag, The Netherlands
3. Center for Rehabilitation, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
4. Northern Center for Health Care Research and Department of Social Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
5. Department of Special Education, University of Groningen, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands