Pollock Jonathan D, Koustova Elena, Hoffman Allison, Shurtleff David, Volkow Nora D
National Institute on Drug Abuse, National Institutes of Health, US Department of Health and Human Services, Bethesda, MD 20892, USA.
Lancet. 2009 Aug 15;374(9689):513-4. doi: 10.1016/S0140-6736(09)60352-4. Epub 2009 Apr 24.