1. De Viersprong Halsteren Netherlands
2. Department of Research Arkin Mental Health Care Amsterdam Netherlands
3. Trimbos Institute Netherlands Institute of Mental Health and Addiction Utrecht Netherlands
4. Amsterdam UMC, Location AMC, Department of Psychiatry University of Amsterdam Amsterdam Netherlands
5. Department of Psychology University of Amsterdam Amsterdam Netherlands
6. GGZ Breburg Breda Netherlands
7. MBT‐Expertise Breda Netherlands
8. Department of Research, Arkin Mental Health Care and Department of Clinical Psychology Vrije Universiteit Amsterdam Amsterdam Netherlands
9. Mind4Life Breda Netherlands
10. Department of Psychiatry, Section of Medical Psychology and Psychotherapy Erasmus MC Rotterdam Netherlands
11. Faculty of Psychology and Educational Sciences University of Leuven Leuven Belgium
12. Research Department of Clinical, Educational and Health Psychology University College London London UK