1 Department of Psychiatry and Psychology Clinical Institute of Neuroscience Hospital Clínic de Barcelona Barcelona, Spain Department of Psychiatry and Psychology Clinical Institute of Neuroscience Hospital Clínic de Barcelona Barcelona, Spain pbruguer@clinic.ub.es Addiction Unit Department of Psychiatry and Psychology Clinical Institute of Neuroscience Hospital Clínic de Barcelona Barcelona, Spain Department of Psychiatry and Psychology Clinical Institute of Neuroscience Hospital Clinic de Barcelona Barcelona, Spain Radboud University Medical Centre Department of Psychiatry and Radboud University Nijmegen Institute for Scientist-Practitioners in Addiction (NISPA) Nijmegen, The Netherlands.