Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program, National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, Baltimore, Maryland, USA

Center on Compulsive Behaviors, National Institutes of Health, Baltimore, Maryland, USA

Medication Development Program, National Institute on Drug Abuse Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA

Center for Alcohol and Addiction Studies, Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, Rhode Island, USA

Division of Addiction Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA

Department of Neuroscience, Georgetown University Medical Center, Washington, D.C., USA