. 2022 May 13;19(10):5943. doi: 10.3390/ijerph19105943
© 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/).
Figure 3.
Study locations of the included articles.