Most of the specialized databases will have scholarly articles that are either Literature Reviews or have a review of the literature as an introduction to the research. Keys to finding them are listed below each database.
Can also try Eric Digests, which are brief, 3-5 page, full text articles that describe the current state of an issue. They provide a bibliography, but do not evaluate the pros and cons of the studies cited.
EBSCO interface for PubMed.
The following databases do not have options to limit results to literature reviews:
Oscar Rennebohm Library
959 Edgewood College Drive - Madison, WI 53711
608-663-3300