. 2020 Nov 22;2020:8818953. doi: 10.1155/2020/8818953
Copyright © 2020 Miliete Gebrehiwot et al.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
A flow chart of recruitment methods.