Cochrane Collaboration.

Consists chiefly of 4 databases: Cochrane database of systematic reviews (CDSR); Database of abstracts of reviews of effectiveness (DARE); Cochrane controlled trials register (CCTR); and Cochrane review methodology database (CRMD).

This handbook is the definitive manual for producing a Cochrane systematic review. The editors have drawn from the expertise of the Cochrane methods groups to bring together the breadth and depth of systematic reviewing experience in a step-by-step guide to writing a Cochrane review.