1. Department of Child and Adolescent Psychiatry, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
2. Mental Healthcare Drenthe, Department Centre for intellectual Disability and Mental Health, Middenweg 19, 9404 LL Assen, The Netherlands
3. Department of Biological and Medical Psychology, University of Bergen, Jonas Lies Vei 91, 5009 Bergen, Norway
4. Accare Child Study Center, Lübeckweg 2, 9723 HE Groningen, The Netherlands