Elsevier, International Journal of Drug Policy, 12(26), p. 1183-1188, 2015
DOI: 10.1016/j.drugpo.2015.09.011
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Date of Acceptance: 21/09/2015 This study was funded by NHS Health Scotland. The opinions expressed in this paper as those of the authors alone and are not necessarily those of NHS Health Scotland. The funders had no role in the conduct of the research. ; Peer reviewed ; Postprint