. 2019 Jun;19(2):1993–1999. doi: 10.4314/ahs.v19i2.22
© 2019 Asowata et al.
Licensee African Health Sciences. This is an Open Access article distributed under the terms of the Creative commons Attribution License (https://creativecommons.org/licenses/BY/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 2.
