Cochrane Library
A best evidence database | Search your topic to find a full-text Cochrane Systematic Review (see "What is a CSR" in left column of this page) OR search to find a journal citation & abstact of a systematic review not yet done by Cochrane, but quality assessed OR search to find a journal citation & abstract of a clinical trial taken from research databases i.e PubMed or EMBASE, published, and unpublished sources, i.e. conference proceedings.