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. 2016 Mar 24;15:46. doi: 10.1186/s12940-016-0129-9

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© Weichenthal et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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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Fig. 3 — Concentration response plot for O_x and risk of MI. Legend: Concentration response plot for O_x (using cubic splines with 4 knots) and risk of emergency room visits for myocardial infarction adjusted for lag-0 PM_2.5*GSH and 3-day mean ambient temperature and relative humidity