1. World drug report 2015;UNODC,2015
2. Global burden of disease attributable to illicit drug use and dependence: Findings from the Global Burden of Disease Study 2010;Degenhardt;The Lancet,2013
3. Effectiveness of interventions to address HIV in prisons;Jurgens,2007
4. Methadone maintenance therapy versus no opioid replacement therapy for opioid dependence;Mattick;Cochrane Database of Systematic Reviews,2009
5. Methadone at tapered doses for the management of opioid withdrawal;Amato;Cochrane Database of Systematic Reviews,2002