1. Yulius Academy, Yulius Mental Health, Barendrecht, the Netherlands
2. Epidemiological and Social Psychiatric Research Institute (ESPRi), Department of Psychiatry, Erasmus University Medical Centre, Rotterdam, the Netherlands
3. Unit for Social and Community Psychiatry, Newham Centre for Mental Health, Queen Mary University of London, London, England
4. Medical Library, Erasmus University Medical Centre, Rotterdam, the Netherlands
5. Faculty of Health, University of Applied Science, Utrecht, the Netherlands