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4. North West Surrey Mental Health Partnership NHS Trust (2008) Confidential Risk Screen. Risks Specific to Drug/Alcohol Use. Specialist Drug and Alcohol Services.
5. Ministry of Justice and Public Health England (2017) The Impact of Community-Based Drug and Alcohol Treatment on Re-offending. https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/674858/PHE-MoJ-experimental-MoJ-publication-version.pdf.