1. National Institute of Psychiatry Ramon de la Fuente ; Mexico City Mexico
2. Pan American Health Organization (PAHO) ; Washington District of Columbia
3. Alcohol Research Group ; Emeryville California
4. Department of Mental Health and Substance Abuse ; World Health Organization (WHO); Geneva Switzerland
5. Department for the Management of Noncommunicable Diseases, Disability, Violence and Injury Prevention ; World Health Organization (WHO); Geneva Switzerland
6. Center for Drug and Alcohol Research ; Hospital de Clinicas de Porto Alegre - UFRGS/Federal University of Rio Grande do Sul; Porto Alegre Brazil
7. Fac. Psicología - UNMDP ; Mar del Plata Argentina
8. Caribbean Institute on Alcoholism and Other Drug Problems ; Port of Spain Trinidad & Tobago
9. Instituto sobre Alcoholismo y Farmacodependencia ; San Jose Costa Rica