. 2021 May 12;18(10):5110. doi: 10.3390/ijerph18105110
© 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.
Study flowchart (four major tasks to achieve).