1. Freudenthal Institute, Utrecht University, P.O. Box 85 170, 3508 AD Utrecht, The Netherlands
2. Trimbos Institute, P.O. Box 80 125, 3500 AS Utrecht, The Netherlands
3. Department of Adolescent Psychiatry and Addiction Prevention, Brijder-Jeugd, 2553 NZ The Hague, The Netherlands
4. Department of Children and Adolescent Psychiatry, Erasmus Medical Center Sophia, P.O. Box 2060, 3015 CN Rotterdam, The Netherlands
5. Department of Pharmaceutical Sciences, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, P.O. Box 80 082, 3508 TB Utrecht, The Netherlands