| Affiliation: | 1. Department of Health Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands;2. Department of Sociology, Interuniversity Center for Social Science Theory and Methodology (ICS), University of Groningen, Groningen, the Netherlands;3. Behavioral Science Institute, Radboud University, Nijmegen, the Netherlands;4. Tranzo, Tilburg University, the Netherlands;5. De Viersprong, PO Box 7 4660 AA, Halsteren, the Netherlands;6. Department of Pedagogy and Educational Sciences, University of Groningen, Groningen, the Netherlands |
