1. Department of Clinical Psychology and Experimental Psychopathology, Faculty of Behavioural and Social Sciences University of Groningen Groningen The Netherlands
2. GGZ Center for Mental Health Care Dimence Deventer The Netherlands
3. Institute of Psychology Leiden University Leiden The Netherlands
4. Department of Methodology and Statistics Utrecht University Utrecht The Netherlands
5. Arkin/Sinaï Centre, Jewish Mental Health Services Amersfoort/Amstelveen The Netherlands