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A systematic review attempts to identify, appraise and synthesize all the empirical evidence that meets pre-specified eligibility criteria to answer a specific research question. Researchers conducting systematic reviews use explicit, systematic methods that are selected with a view aimed at minimizing bias, to produce more reliable findings to inform decision making.
Systematic reviews should be conducted by a team of researchers, at least one of whom has significant knowledge of research conducted in the subject, and cannot be done alone. Systematic reviews follow the established standards and methodologies for conducting systematic reviews.