1. St Luc Hospital, Department of Psychiatry, Hippocrate Av, 10, 1200 Brussels, Belgium.
2. Epidemiology Unit, Universite Catholique de Louvain, School of Public Health, Centre for Research on the Epidemiology of Disasters, Brussels, Belgium.
3. Universite Catholique de Louvain, School of Public Health, Centre for Research on the Epidemiology of Disasters, Brussels, Belgium.
4. University of Health Sciences, Faculty of Medicicine, Phnom Penh, Cambodia.
5. University Hospital Saint-Luc, Department of Psychiatry.
6. University of Oslo, Psychosocial Centre for refugees, Oslo, Norway.