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. 2014 Nov 7;14:564. doi: 10.1186/s12879-014-0564-6

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© McDonald et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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The multi-parameter evidence synthesis model (depicted as a directed acyclic graph [DAG]) used to estimate the prevalence of HCV infection and the proportion of HCV Ab+ individuals with PWID and non-PWID modes of transmission. Stratification is by ethnicity and sex, but for clarity the DAG for males only is shown. Ovals indicate model parameters; rectangles indicate data sources. Distributional and functional relationships between parameters/data sources are indicated by solid and dashed arrows, respectively.