1. Eclectica, Institute for Research and Training, Torino, Italy
2. Centre for Alcohol and Drug Research, Aarhus University, Aarhus, Denmark
3. Drug and Alcohol Research Centre, Middlesex University of London, London, UK
4. European Centre for Social Welfare Policy and Research, Wien, Austria
5. Institute of Psychiatry and Neurology, Department of Public Health, Warsaw, Poland
6. German Institute on Addiction and Prevention Research, Catholic University of Applied Sciences, Cologne, Germany