A highly concentrated source of reports of randomised and quasi-randomised controlled trials. In addition to bibliographic details (author, title, source, year, etc) CENTRAL records often include an abstract (a summary of the article). They do not contain the full text of the article. Click on "Trials", then "Search Trials".
From the U.S. National Institutes of Health. ClinicalTrials.gov is a registry and results database of federally and privately supported clinical trials conducted in the United States and around the world.