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Article History

Received: 27 February 2018

Accepted: 27 July 2018

First Online: 8 August 2018

Ethics approval and consent to participate

: Ethical clearance was obtained from Research Ethical Review Committee of Microbial Cellular and Molecular Biology Department, Addis Ababa University. The purpose and objective of the study was explained to administrative and health officials of the study area. Confidentiality issues of study participants were kept.

: Not applicable.

: The authors declare that they have no any competing interests.

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