Endalifer, Melese Linger
Andargie, Gashaw
Mohammed, Bekri
Endalifer, Bedilu Linger
Article History
First Online: 29 April 2021
Declarations
:
: The study was conducted as per the <i>Helsinki Declaration</i> for biomedical research. Ethical approval and clearance were obtained from the University of Gondar Institute of public Health Research Ethical Review committee with a reference number of <i>IPH/2849/02/2016</i>. An ethical clearance letter was submitted to the Woldia Education office and a permission letter was obtained. Informed written consent was taken from each student and informed written consent was taken from their parents for those students whose age less than 18.
: Not applicable
: The authors declare that they have no competing interests.