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The BMJ is an online journal, and the online version of the journal, and each article at bmj.com is the complete version. The online journal is updated daily, and each article is identified by a unique online article locator. The locator, volume, and year are all that is required when indexing or citing content from The BMJ: we recommend that you use the digital object identifier (doi) for linking (e.g. doi: http://dx.doi.org/10.1136/bmj.h4320), and use the following citation format (for the same article, published in volume 351 in 2015): BMJ 2015;351:h43200
Several print editions are produced to aid distribution of content from the journal to specific audiences. Each contains only a digest of selected content from bmj.com, and articles in print editions may have been shortened and may not contain full references and details of conflicts of interest. Please do not use the page numbers given in any print edition when citing or linking to content in The BMJ.
• The BMJ General Practice: weekly and aimed at UK general practitioners
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