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. 2016 Aug 27;89(8):1289–1297. doi: 10.1007/s00420-016-1163-1

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© The Author(s) 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.

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Fig. 2 — Association between personal benzene and 1,3-butadiene exposure (µg/m³) during refinery turnarounds in Refinery 1 (a) and Refinery 2 (b) and work in the oil harbour (c)