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. 2018 Dec 19;18:981. doi: 10.1186/s12913-018-3758-6

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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 — Most of the assignments were offered by five companies with 77% of all assignments coming from two companies (a). Tuesday was the most common day that emails were sent, and 6.9% of emails were received during the weekend (b). The highest influx of emails was observed in July while the fewest emails were received in August (c)