1 University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland. Michael.Kaess@upd.ch.
2 Department of Child and Adolescent Psychiatry, Centre for Psychosocial Medicine, University Hospital Heidelberg, Heidelberg, Germany. Michael.Kaess@upd.ch.
3 Department of Child and Adolescent Psychiatry and Accare Child Study Center, University of Groningen, University Medical Center Groningen, Groningen, Netherlands.