. 2021 May 24;6(2):86. doi: 10.3390/tropicalmed6020086
© 2021 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 2.
Geographic distribution of included studies.