Short term exposure to air pollution and stroke: systematic review and meta-analysisBMJ 2016; 354 doi: https://doi.org/10.1136/bmj.i4851 (Published 06 September 2016) Cite this as: BMJ 2016;354:i4851
This Research article (BMJ 2015;350:h1295, doi:10.1136/bmj.h1295) was mistakenly published under the CC BY NC licence initially online and in the May 2015 academic print issue, and should have been published under the CC BY licence. The online version has since been corrected.
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