1. Department of Child and Adolescent Psychiatry, University Hospital Giessen and Marburg, Campus Marburg, Marburg, Germany
2. Institute of Medical Psychology, Philipps University Marburg, Marburg, Germany
3. Department of Paediatrics, Klinikum Links der Weser, Bremen, Germany
4. Department of Child and Adolescent Psychiatry, Saarland University Hospital, Homburg, Germany
5. Institute of Medical Psychology, Universitätsklinikum Eppendorf, Hamburg, Germany