The Cochrane Library provides full-text reviews and meta-analyses, focusing on a wide range of therapies. It also provides abstracts of randomized controlled trials. Within the Cochrane Library, the Cochrane Database of Systematic Reviews (CDSR), is the leading resource for systematic reviews in health care. A systematic review from Cochrane is viewed as the "gold standard".
Compared to PubMed, Cochrane is a small database. I'd recommend you try a very broad search at first and then narrow down (by using limits or additional terms), only if needed.
To learn more about the Cochrane Library, click on the logo below to view a narrated presentation (feel free to skip the "Search Manager Tab" section of the presentation).
- Unfortunately, you need to set up a free account by filling out a very short registration form, before viewing the content, but it is worth it!