It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Created by Cochrane Collaboration designed to provide evidence to inform health care decision making. Comprised of six databases: Cochrane Database of Systematic Reviews (CDSR); Database of Abstracts of Reviews of Effectiveness (DARE); CENTRAL - Registry of RCT's; and Methodology Reviews; Health Technology Assessments (HTA); and Economic Evaluations Database (EED). Updated quarterly.