1. School of Life and Medical Sciences; University of Hertfordshire; Hatfield; UK
2. National Institute for Drug Prevention; Institute for Social Policy and Labour; Budapest; Hungary
3. Addictions Department, Institute of Psychiatry; King's College London; London; UK
4. Institute of Psychiatry and Neurology (IPIN); Warsaw; Poland
5. Servizio Salute Regione Marche; Ancona; Italy
6. IMIM-Hospital del Mar Parc de Recerca Biomèdica; 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