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. 2022 Nov 17;19(22):15147. doi: 10.3390/ijerph192215147

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Chigger species richness in the US. Created with Datawrapper. Data sources: [17,45].