Received: 12 April 2021
Accepted: 13 December 2021
First Online: 14 January 2022
: Ethical clearance was obtained from the Institutional Review Board (IRB) of Debre Tabor University. Informed consent was obtained from all subjects or parents on behalf of children after explaining the objective of the study to each of the study participants. All the experiment protocols for involving humans were in accordance with the guidelines of the national/international/institutional or Declaration of Helsinki in the manuscript.
: Not applicable.
: The authors declare that they have no competing interests.