1. Sciensano Brussels Belgium
2. Ministry of Health, Directorate of Health, Department of Epidemiology and Statistics Luxembourg
3. Addiction Switzerland Lausanne Switzerland
4. University of Manchester Manchester UK
5. Stichting Informatievoorziening Zorg (IVZ), Houten the Netherlands
6. Ministry of Health, Spanish National Plan on Drugs Madrid Spain
7. Health Research Board Dublin Ireland
8. Ministry of Health, Department of Prevention Rome Italy
9. French Monitoring Center on Drugs and Drugs Addiction Paris France
10. IFT Institut fuer Therapieforschung Munich Germany
11. European Monitoring Center for Drugs and Drug Addiction Lisbon Portugal