[1] Denver Hlth, Rocky Mt Poison & Drug Ctr, Denver, CO USA
[2] Assoc Utilizzo Conoscenze Neurosci Fini Sociali A, Pietrasanta, Italy
[3] Natl Hlth Serv Lanarkshire, Motherwell, Scotland
[4] OAD Clin, London, England
[5] CGL New Direct, Nottingham, England
[6] Univ Victor Segalen, Dept Psychiat & Addict, Victor Pachon Med Sch, Bordeaux, France
[7] Bizia Addict Treatment Clin, Bayonne, France
[8] Ctr Hosp Esquirol Limoges, Limoges, France
[9] Clin Liberte, Bagneux, France
[10] Hop Paul Brousse, Vuillejuif, France
[11] Univ Duisburg Essen, LVR Hosp Essen, Dept Addict Behav & Addict Med, Fac Med, Essen, Germany
[12] SerT Bitonto Palo Colle, Bari, Italy
[13] Univ Oslo, Norwegian Ctr Addict Res, Oslo, Norway
[14] Hosp del Mar, Inst Neuropsiquiatria Addicc INAD, Barcelona, Spain
[15] Inst Hosp Mar Invest Med IMIM, Barcelona, Spain
[16] Santa Chiara Univ Hosp, Dept Specialty Med, Pisa, Italy