1 Departament de Patologia i Terapèutica Experimental, Institut de Neurociències, Universitat de Barcelona, Catalonia, Spain. jbonaventura@ub.edu.
2 Biobehavioral Imaging and Molecular Neuropsychopharmacology Unit, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD, USA. jbonaventura@ub.edu.
3 Biobehavioral Imaging and Molecular Neuropsychopharmacology Unit, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD, USA.
4 Molecular Neuropharmacology Section, National Institute of Neurological Disorders and Stroke Intramural Research Program, Bethesda, MD, USA.
5 Division of Preclinical Innovation, National Center for Advancing Translational Sciences, Rockville, MD, USA.
6 Neurobiology of Relapse Section, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD, USA.
7 Experimental Therapeutics and Pathophysiology Branch, Intramural Research Program, National Institute of Mental Health, Bethesda, MD, USA.
8 Biobehavioral Imaging and Molecular Neuropsychopharmacology Unit, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD, USA. mike.michaelides@nih.gov.
9 Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA. mike.michaelides@nih.gov.