Clarke M, Hopewell S, Chalmers I (2007)

Reports of clinical trials should begin and end with up-to-date systematic reviews of other relevant evidence: a status report. Journal of the Royal Society of Medicine 100: 187-90.
Cross-sectional study showing the proportion of reports of randomized trials that discussed a systematic review in their Introduction section or placed the trial’s findings in the context of a review in the Discussion section, in May 2005

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