1. Department of Child and Adolescent Psychiatry, Curium-Leiden University Medical Center, Leiden, The Netherlands;
2. Department of Theory of Sciences and Research Methodology, University of Humanistic Studies, Utrecht, The Netherlands;
3. Department of Child and Adolescent Psychiatry, De Bascule-VUmc, Duivendrecht, The Netherlands;
4. Department of Quality of Care and Innovation, Intermetzo-Pluryn, Nijmegen, The Netherlands