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. 2014 Dec 10;15:418. doi: 10.1186/1471-2474-15-418

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© Ndlovu 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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Revised hierarchical analgesic categorisation model for prescribing analgesics and NSAIDs in primary care. Modified version of that published in Bedson J, Belcher J, Martino OI et al. The effectiveness of national guidance in changing analgesic prescribing in primary care from 2002 to 2009: an observational database study, European Journal of Pain, 2013;17:434–443, with permission of John Wiley and Sons.