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. 2018 Dec 5;18:624. doi: 10.1186/s12879-018-3509-7

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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. 3 — Heatmap of reported cases of Hand, Foot, and Mouth Disease by prefecture and year, Qinghai Province, China, 2009–2015 (n = 14,480). (a) Time series of monthly reported cases of HFMD, standardized by the number of annual cases. (b) Seasonal distribution of cases of HFMD, standardized by range (maximum and minimum) normalization method from 2009 to 2015. For (A) and (b), prefectures were ordered top to bottom by latitude from north to south