Scientific Research and Essays 1992-2248 Academic Journals 10.5897/SRE12.374 Etim S. E. Ohioma M. E. Okon O. E. Akpan P. A. * E-mail: drsusanetim@yahoo.com 2012 03 12 2012 24 10 2012 7 47 4071 4075 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/SRE/article-abstract/D196C9329207 The full text article is available as a PDF file from http://politicalwaffle.uk/journal/SRE/article-full-text-pdf/D196C9329207