Reviewer are expert researchers and specialists in the same subject area as the paper. Editors choose reviewers whose expertise most closely matches the manuscript’s topic and invite them to review the paper. Reviewers evaluate article submitted to journals, based on the requirements of that journal, predefined criteria, and quality, completeness and accuracy of the research presented. They provide feedback on the article and the research, suggest improvements and make a recommendation to the editor about whether to accept, reject or request changes to the article.