Regulatory affairs also indicates a very specific meaning in medical industries or companies. Review articles are the summary of current state of understanding on a specific research topic. They analyze or discuss research previously published by scientist and academicians instead of reporting novel research results. review comes within the sort of systematic reviews and literature reviews and are a sort of secondary literature. Systematic reviews determine an objective list of criteria, and find all previously published original research papers that meet the standards. Literature reviews, against this , provide a summary of what the authors believe are the simplest and most relevant prior publications. The concept of "review article" is break away the concept of peer-reviewed literature. it's possible for a review to be peer-reviewed, and it's possible for a review to be non-peer-reviewed.