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. 2017 Oct 23;113(3):545–563. doi: 10.1111/add.14012

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© 2017 The Authors. Addiction published by John Wiley & Sons Ltd on behalf of Society for the Study of Addiction.

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Impact of opioid substitution therapy (OST) combined with low‐coverage needle and syringe programmes (NSP) from studies adjusting for confounders and all pooled estimates. [Colour figure can be viewed at wileyonlinelibrary.com]