Essential Science Indicators.

The Essential Science Indicators (ESI) database, published by Thomson Scientific/ISI, presents an array of data that ranks scientists/health professionals, their individual papers, and the journals in which they are published, as well as countries and institutions that perform scientific research. By using this resource, it is possible to prepare ranked statistical lists. The resource covers 6,000 journals published in both the United States and from international publishers. Users should note that ESI covers scientific information in the broadest possible scope, so this is not just limited to biomedical topics and resources.