The Cochrane Library aims to make the results of well-conducted clinical trials readily available and is a key resource in evidence-based medicine.

All countries have free access to two-page abstracts of all Cochrane Reviews and short plain-language summaries of selected articles.

[2] 2) The government-funded U.S. National Library of Medicine maintains an alternative database MEDLINE, which is free of charge to everyone and has significantly more extensive coverage than Cochrane.

; a continually updated database of trials called the Cochrane Central Register of Controlled Trials (CENTRAL); hand searching, where researchers look through entire libraries of scientific journals by hand and; reference checking of obtained articles in order to identify additional studies that are relevant to the question they are attempting to answer.

If accepted, the feedback will be published in a scrolling list of comments in reverse chronological order, with the most recent submission at the top of the page.