A literature review aims to highlight the current state of knowledge regarding a topic under study. Literature reviews are comprised of secondary sources and as such do not report any new or original experimental work. The main purpose of a literature review is to situate the current study within the body of literature and to provide context for the reader. A literature review is not a summary but a synthesis of the material you have read. In this course the purpose of the literature review is to answer a significant clinical question.Instructions:Your paper needs to follow the following criteria: