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May 26, 2004

Trial Registration to Prevent Duplicate Publication

Author Affiliations

Letters Section Editor: Stephen J. Lurie, MD, PhD, Senior Editor.

JAMA. 2004;291(20):2432. doi:10.1001/jama.291.20.2432-c

To the Editor: Dr von Elm and colleagues1 identified patterns of duplicate publication by investigating articles included in systematic reviews of anesthesia and analgesia. They noted that duplicate publication is wasteful of the time and resources of editors, peer reviewers, and readers and may change the conclusions of systematic reviews. In addition, it undermines the integrity of science, particularly in the case of covert duplicate publication. In medicine, the impact of this practice is particularly serious in that the health and life of patients may be affected when the results of a study are effectively counted more than once.2

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