1. School of Pharmacy; University of Hertfordshire; Hatfield; UK
2. Addictions Department; Institute of Psychiatry, King's College London; London; UK
3. National Institute for Drug Prevention; Institute for Social Policy and Labour; Budapest; Hungary
4. Institute of Psychiatry and Neurology (IPIN); Poland
5. Servizio Salute Regione Marche; Ancona; Italy
6. Consorci Mar Parc de salut de Barcelona; Barcelona; Spain
7. Bergen Clinics Foundation; Bergen; Norway
8. DrugScope; London; UK
9. Rhine State Hospital; University of Duisbarg-Essen; Essen; Germany
10. De Sleutel; Gent; Belgium