Received: 2 March 2021
Accepted: 21 June 2021
First Online: 25 August 2021
: The study was approved by the Office of the Vice President for Research and Technology Transfer, Addis Ababa University. We confirm that all methods related to the human participants were performed in accordance with the Declaration of Helsinki. Oral informed consent was obtained from all the participants after the nature of the study and the information sought had been fully explained.
: The authors declare that they have no competing interests.