• Detailed Information: Cochrane Central Register of Controlled Trials
• Prices
• Copyright

The Cochrane Central Register of Controlled Trials (Central; Clinical Trials) is a bibliography of controlled trials identified by contributers of the Cochrane Collaboration and others, as a part of an international effort to hand search the world´s journals and create an unbiased source of data for systematic reviews. Central includes reports published in conference proceedings and in many other sources not currently listed in MEDLINE or other bibliographic databases.