1. Faculty of Psychology and Educational Sciences, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
2. Child & Youth Institute, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
3. Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, 2610 Antwerp, Belgium
4. Research Department, Odisee University of Applied Sciences, 1000 Brussels, Belgium
5. Center for Contextual Psychiatry, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
6. Department of Medical and Clinical Psychology, Tilburg University, 5037 AB Tilburg, The Netherlands
7. Department of Psychology, University of Victoria, Victoria, BC V8P 5C2, Canada
8. Eetexpert, Kessel-Lo, 3010 Leuven, Belgium
9. Educational Unit for Professional Training and Service in the Behavioural Sciences (UNIBS), University of the Free State, Bloemfontein 9301, South Africa