Systematic reviews seek to discover, assess, and synthesize the findings of all relevant individual research on a health-related topic, making the available information more accessible to decision makers. The main advantage of systematic reviews is that they include only high-quality studies that have been tested for reliability. This means that they provide evidence that is most likely to be accurate and useful. Systematic reviews also use explicit criteria to select studies that will be included in the review. This helps ensure that only relevant studies are considered. It also ensures that studies conducted under similar circumstances by different researchers are not duplicated. Finally, systematic reviewers try to minimize bias by including only high-quality studies in their analyses.