Cochrane Collaboration
The Cochrane Collaboration is an international not-for-profit organization, providing up-to-date information about the effects of health care. The organization's principal output is The Cochrane Library. This includes the Cochrane Database of Systematic Reviews, a regularly updated database of thousands of Cochrane reviews on the effects of healthcare interventions, on the accuracy of diagnostic tests and on the methodology of systematic reviews and meta-analysis.

Campbell Collaboration (C2)
The international Campbell Collaboration (C2) is a non-profit organization that aims to help people make well-informed decisions about the effects of interventions in the social, behavioral and educational arenas.  The organization holds an annual conference.

Short course in meta-analysis
Three-day course in Bristol, UK. This course, taught by Jonathan Sterne and Matthias Egger, offers an excellent introduction to all aspects of meta-analysis, interspersed with hands-on practical examples. This course has been offered annually since 2000, and participants invariably find it both stimulating and accessible.

Related courses in Bristol, UK.
Related courses in statistics and research design offered annually at the University of Bristol.