[1] Hosp Clin Barcelona IDIBAPS CIBERSAM, Barcelona, Spain
[2] Autonomous Univ Barcelona, IMIM INAD Parc Salut Mar, Pharmacol Unit, Barcelona, Spain
[3] Autonomous Univ Barcelona, IMIM INAD Parc Salut Mar, Drug Addict Unit, Barcelona, Spain
[4] CRC Mar Hosp Mar, Inst Alta Tecnol PRBB, Barcelona, Spain
[5] Kings Coll London, Inst Psychiat, Dept Psychosis Studies, London WC2R 2LS, England
[6] Univ Sao Paulo, Neurosci & Cognit Behav Dept, BR-14049 Ribeirao Preto, Brazil