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. 2016 Sep 20;11:45. doi: 10.1186/s12995-016-0134-5

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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. 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. 2 — Correlation between total dust (log TD) and respirable dust (log RD) for carpenters (N = 21, black square), Spearman correlation, r _s = 0.64 and demolition workers (N = 11, green triangle), Spearman correlation, r _s = 0.69