Abstract
The Cochrane Library of Systematic Reviews is published quarterly. Issue 2 2009 contains 3737 complete reviews, 1939 protocols for reviews in production, and 9403 one-page summaries of systematic reviews published in the general medical literature. In addition, there are citations of 564,000 randomized controlled trials, and 11,000 cited papers in the Cochrane methodology register. The health technology assessment database contains 7591 citations. This edition of the Library contains 112 new reviews of which 6 have potential relevance for practitioners in pain and palliative medicine.