Authors' Response

References 

1. Bloor M, McIntosh J, McKeganey N, Robertson M. ‘Topping up’ Methadone: an analysis of patterns of heroin use among a treatment sample of Scottish drug-users. Public Health. 2008;122:1013–1019
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2. Centre for Drug Misuse published reports . Available from: <http://www.gla.ac.uk/departments/drugmisuse/dorisreports/publishedreports>[Last accessed 13.01.09]
3. Key findings from the Drug Outcome Research in Scotland (DORIS) study. Available from: <http://www.gla.ac.uk/media/media_101969_en.pdf>[Last accessed 13.01.09]
4. Bloor M, Gannon M, Hay G, Jackson G, Leyland A, McKeganey N. Contribution of problem drug users' deaths to excess mortality in Scotland: secondary analysis of a cohort study. BMJ. 2008;337:a478
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5. Information and Statistics Division Scotland . How many people are receiving methadone hydrochloride mixture for opiate dependence in Scotland and what are the prescribing costs per person? Scottish Executive Report. Available from: <http://www.drugmisuse.isdscotland.org/publications/local/isd_methadone.pdf>2005;[Last accessed 13.01.09]
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8. McKeganey N, Bloor M, Robertson M, Neale J, MacDougal J. Abstinence and drug abuse treatment: results from the drug outcome research in Scotland study. Drugs: education, prevention and policy. 2006;13:537–550