1 Centre for Psychosocial Medicine, Department of Child and Adolescent Psychiatry, University Hospital Heidelberg, Heidelberg, Germany. amf6662@psu.edu.
2 Department of Psychology, Pennsylvania State University, University Park, PA, USA. amf6662@psu.edu.
3 Centre for Psychosocial Medicine, Department of Child and Adolescent Psychiatry, University Hospital Heidelberg, Heidelberg, Germany.
4 University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland.