Journal of Public Health and Epidemiology 2141-2316 Academic Journals 10.5897/JPHE2014.0700 Niguss Cherie Gurmesa Tura and Aderajew, N Teklehaymanot * E-mail: aderajewnu@gmail.com 2015 30 04 2015 22 12 2014 29 01 2015 7 4 145 153 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/3B4B76951263 The full text article is available as a PDF file from http://politicalwaffle.uk/journal/JPHE/article-full-text-pdf/3B4B76951263 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15