2013g-039 childsoldiers clinicalpsychology cognitivebehavioraltherapy cognitivetherapy complications counseling diagnosis dissociativedisorders dissociativedisordersinchildren dissoziation emotions kognitiveverhaltenstherapie mentalhealth personality post-traumaticstressdisorder(ptsd) post-traumaticstressdisorderinchildren psychictraumainchildren psychoanalysis psychology psychopathology socialaspects therapy treatment