The Cochrane Library has developed a collection of Evidence-Based Medicine database resources. Ovid Technology is a commercial vendor that has created a unique search interface to these EBM databases. Search individual databases separately or select a predetermined combined collection of database. To find the best evidence it is recommended to search separately since each database contains specific information. The Greeenblatt Library has subscribed to three core EBM databases and three additional EBM components serve as a compliment: