1. Behavioural Science Institute, Radboud University, Nijmegen, the Netherlands
2. Radboud University Medical Centre, Department of Psychiatry, Nijmegen Institute for Scientist Practitioners in Addiction, Nijmegen, the Netherlands
3. Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
4. Department of Psychiatry, Academic Medical Center, Amsterdam, the Netherlands
5. Donders Institute for Brain, Cognition, and Behaviour, Radboud University, Nijmegen, the Netherlands