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. 2019 Mar 31;8:27. doi: 10.1186/s40249-019-0535-7

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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. 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 — Distribution of the study areas to test the field molluscicidal efficacy of 4% TDS against Oncomelania hupensis in China. During the period between 2011 and 2014, field assessment of 4% TDS against O. hupensis was conducted in provinces that were endemic for S. japonicum in China, including Hunan, Hubei, Jiangxi, Anhui, Jiangsu, Sichuan, and Yunnan