1. Research Service Veterans Affairs Nebraska‐Western Iowa Health Care System Omaha Nebraska USA
2. Department of Internal Medicine University of Nebraska Medical Center Omaha Nebraska USA
3. Department of Biochemistry & Molecular Biology University of Nebraska Medical Center Omaha Nebraska USA
4. Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse, Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism, Division of Intramural Clinical and Biological Research National Institutes of Health Baltimore and Bethesda Maryland USA
5. Johns Hopkins Bloomberg School of Public Health Johns Hopkins University Baltimore Maryland USA
6. PsychoNeuroEndocrinology Research Group, Division of Psychiatry, Department of Brain Sciences Imperial College London, Hammersmith Hospital London UK
7. Department of Pharmacology, Institute of Neuroscience and Physiology The Sahlgrenska Academy at the University of Gothenburg Gothenburg Sweden
8. Medication Development Program, National Institute on Drug Abuse Intramural Research Program National Institutes of Health Baltimore Maryland USA
9. Department of Behavioral and Social Sciences, Center for Alcohol and Addiction Studies Brown University Providence Rhode Island USA
10. Division of Addiction Medicine, Department of Medicine School of Medicine, Johns Hopkins University Baltimore Maryland USA
11. Department of Neuroscience Georgetown University Medical Center Washington District of Columbia USA