Article History
Received: 23 May 2018
Accepted: 27 November 2018
First Online: 7 January 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from IRB of School of Public Health in AAU. Following the endorsement by the IRB, a written permission was presented to Addis Ababa regional health bureau and study health centers. Informed verbal consent was obtained during a data collection. Furthermore confidentiality was assured throughout the study.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.