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. 2019 Jul 8;92(8):1179–1190. doi: 10.1007/s00420-019-01453-0

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© The Author(s) 2019

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 — Use of hearing protection at work (frequency of use shown in different shades of grey) in relation to noise exposure at work (x-axis, time at work having to raise voice due to noise) shown as proportion of respondents (y-axis) in each noise exposure strata for the preschool cohort (left) and for population controls (right)