1. Department of Clinical Psychology (Boelen, Lenferink) and Department of Child and Adolescent Studies (Spuij), Utrecht University, Utrecht, the Netherlands; ARQ National Psychotrauma Centre, Diemen, the Netherlands (Boelen); Department of Clinical Psychology and Experimental Psychopathology, University of Groningen, Groningen, the Netherlands (Lenferink); TOPP-zorg, Driebergen-Rijsenburg, the Netherlands (Spuij).