1. Department of Child and Adolescent Psychiatry and Psychotherapy, University of Ulm, Germany
2. Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health Mannheim, University of Heidelberg, Mannheim, Germany
3. Department of Medical Psychology and Medical Sociology, University of Leipzig, Germany
4. Department of Psychosomatic Medicine and Psychotherapy, University Medical Center, University of Mainz, Germany