“…The data presented in this paper were collected in the context of a research program on psychopathology among close relatives of homicide victims in the Netherlands (Van Denderen, de Keijser, Gerlsma, Huisman, & Boelen, ; Van Denderen, de Keijser, Huisman, et al, ). Participants were invited to take part in a questionnaire survey and, subsequently, were offered the possibility to undergo treatment in the context of a treatment study if meeting the inclusion criteria.…”