1. Criminology Department, Leiden University, Leiden, The Netherlands
2. Netherlands Institute for the Study of Crime and Law Enforcement, Amsterdam, The Netherlands
3. Department of Economics, Leiden University, Leiden, The Netherlands
4. Criminal Law Department, Leiden University, Leiden, The Netherlands
5. Research and Documentation Centre, Hague, The Netherlands
6. School of Criminal Justice, Rutgers University, New Brunswick, NJ, USA