1. Leiden University Medical Centre, Department of Psychiatry, Albinusdreef 2, 2333 ZA Leiden, Netherlands
2. Medical Directorate Mental Health Institute Rivierduinen, Sandifoortdreef 19, 2333 ZZ Leiden, Netherlands
3. VU Amsterdam, Department of Clinical Psychology, Van der Boechorststraat 1, 1081 BT Amsterdam, Netherlands
4. Parnassia Psychiatric Institute, Monsterseweg 93, 2553 R The Hague, Netherlands