Cochrane Library via UNC-CH. The Cochrane Library (ISSN 1465-1858) is a collection of databases that contain different types of high-quality, independent evidence to inform healthcare decision-making. It includes the databases: Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials (CENTRAL), and Cochrane Clinical Answers. Also included are Special Collections: curated content collections on a specific healthcare topic.