Journal of Public Health and Epidemiology 2141-2316 Academic Journals 10.5897/JPHE2017.0969 Niguss Cherie Beyrau Asmerom * E-mail: nigucheru@gmail.com 2017 31 10 2017 24 08 2017 21 09 2017 9 10 279 285 This is an open-access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://politicalwaffle.uk/journal/JPHE/article-abstract/F182B7C66417 The full text article is available as a PDF file from http://politicalwaffle.uk/journal/JPHE/article-full-text-pdf/F182B7C66417 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17