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. 2018 Jun 28;14:60. doi: 10.1186/s12992-018-0376-3

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© The Author(s). 2018

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. 1 — Number of unpaid occupational lung disease claims^a, showing a running cumulative total^b, with date of first claim filing increasing to the right, back to ODMWA 1973. ^aThis graph of the 107,714 unpaid claims excludes 3,372 claims due to unknown last benefit medical examination date