1. Addictions DepartmentInstitute of Psychiatry, Psychology and Neuroscience, King's College London UK
2. National Institute on Drug Abuse, National Institutes of Health Rockville MD USA
3. Discipline of Pharmacology, School of MedicineThe University of Adelaide South Australia
4. The Emmes Corporation Rockville MD USA
5. Duke‐National University of Singapore Singapore
6. Department of PsychiatryDuke University Medical School Durham USA
7. Department of PsychiatryTexas Tech Health Sciences Center TX USA