Cochrane, previously known as the Cochrane Collaboration, is an independent, nonprofit, nongovernmental organization consisting of a group of more than 37,000 volunteers in more than 130 countries.
The group was formed to organize medical research information in a systematic way, according to the principles of evidence-based medicine, to facilitate the choices that health professionals, patients, policy makers, and others face in health interventions.
It conducts systematic reviews of randomized controlled trials of health-care interventions and diagnostic tests, which it publishes in The Cochrane Library. A few reviews (in fields such as occupational health) have also studied the results of non-randomized, observational studies.

See Cochrane

Adapted from Wikipedia, the free encyclopedia. Internet. Accessed on June 14, 2016.