Disclaimer: The Journal of Health Sciences publishes an “Ahead of print” manuscript format as a free service to authors to expedite the dissemination of scientific findings to the research community as soon as possible after acceptance, following peer review and corresponding modification (where appropriate). An “Ahead of print” manuscript is published online before copyediting, formatting for publication and author proofing, but is nonetheless, fully citable through its Digital Object Identifier (doi®). Nevertheless, this “Ahead of print” version is NOT the final version of the manuscript. When the final version of this paper is published within a definitive issue of the journal with copyediting, full pagination, etc., the new final version will be accessible through the same doi, and this "Ahead of print" version of the paper will disappear.