Funding for this research was provided by:
Bahir Dar University
Received: 25 January 2018
Accepted: 5 April 2018
First Online: 11 April 2018
Ethics approval and consent to participate
: The study received ethical approval from Ethical Review Committee of Bahir Dar University in July 2016 (Ref: RCS/24/17; 7/18/2016). Written consent of parents/guardians (for adolescents less than 18 years old), verbal consent of adolescents (18 years and above), and verbal accent (adolescents less than 18 years old) was obtained after being fully informed of the study purpose and procedure.
: The authors declare that they have no competing interests.
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