1. University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
2. Department of Child and Adolescent Psychiatry, Centre for Psychosocial Medicine, University of Heidelberg, Heidelberg, Germany
3. Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
4. Child and Adolescent Psychiatric Hospital, Psychiatric University Hospitals of Basel, Basel, Switzerland
5. Department of Clinical Research, University of Basel, Basel, Switzerland