Funding for this research was provided by:
College of Medicine and Health Sciences, University of Gondar (UoG (O/V/P/RCS/05/216/2017))
Received: 18 May 2020
Accepted: 8 December 2020
First Online: 2 January 2021
Ethics approval and consent to participate
: The study protocol was approved by the University of Gondar Institutional Health Research Ethics Review Committee (UoG (O/V/P/RCS/05/216/2017)). Written informed consent was obtained from all individual participants included in the study.
: Not applicable.
: All authors declare that they have no conflict of interest.