Funding for this research was provided by:
Addis Ababa University
Received: 21 February 2020
Accepted: 2 June 2020
First Online: 16 June 2020
Compliance with ethical standards
: The authors declare that they have no conflicts of interest.
: This study was conducted in accordance with the Declaration of Helsinki, and approval for the study protocol was granted by the Ethics Review Board of Tikur Anbesa Specialized Hospital.
: Participants and their parents were informed of their written consent prior to involving them in the study. Human rights were kept safe throughout the study.
: Consent is received from all authors to publish the study.