. 2022 Mar 21;19(6):3720. doi: 10.3390/ijerph19063720
© 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 1.
Article-selection algorithm (PRISMA) [32].