1. Clinical Psychology for Children/Adolescents and Couples/Families, University Zurich, Zurich, Switzerland
2. Insitute of Psychology, Hamburg University, Hamburg, Germany
3. Department of Child and Adolescent Psychiatry and Psychotherapy, University Medical Centre Hamburg, Hamburg, Germany
4. Department of Child and Adolescent Psychiatry and Psychotherapy and Psychosomatics, University Medical Centre Münster, Münster, Germany