2.1.1.1 General principle

The essential activity of The Cochrane Collaboration is co-ordinating the preparation and maintenance of systematic reviews of the effects of healthcare interventions performed according to procedures specified by The Cochrane Collaboration. The performance of the review must be free of any real or perceived bias introduced by receipt of any benefit in cash or kind, any hospitality, or any subsidy derived from any source that may have or be perceived to have an interest in the outcome of the review. All entities that constitute The Cochrane Collaboration must accept this general principle as a condition of participation in the organisation.