1. Institute of Psychology, Leiden University, Leiden, The Netherlands.
2. Department of Psychiatry, Erasmus University Medical Center, Rotterdam, The Netherlands.
3. GGZ Centraal, Expertise Centre for Personality Disorders.
4. Pro Persona, Center for Psychotherapy, Amersfoort, The Netherlands.
5. De Viersprong Institute for Studies on Personality Disorders, Halsteren, The Netherlands.