1. Department of Research and Innovation, Clinic for Mental Health and Addiction Oslo University Hospital Oslo Norway
2. Institute of Clinical Medicine University of Oslo Oslo Norway
3. Department of Inclusive and Special Needs Education, Faculty of Behavioural and Social Sciences University of Groningen Groningen the Netherlands
4. Department of Psychiatry, Helse Nord‐Trønderlag Namsos Hospital Namsos Norway
5. Department of Mental Health Norwegian University of Science and Technology (NTNU) Trondheim Norway
6. Department of Child and Family Welfare, Faculty of Behavioural and Social Sciences University of Groningen Groningen the Netherlands