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第三节 科研设计的基本原则
    Retraction, comment, and errata policies of the US National Library of Medicine. Colaianni LA Lancet 1992 , 340(8818):536-7.
    Articles may be retracted or disavowed by the author (or occasionally, by the author’s institutional sponsor, editor or publishers) because of scientific misconduct or the conviction that the results reported can’t be replicated. NLM links the retraction notice with the citation to the original article by inserting the notice“Retracted by”and the reference to the retraction notice following the title in the citation to the original article. Users can identify retraction notices by searching using the publication type heading Retraction of publication (PT) and retracted publications using the heading -------Since NLM’s retraction policy begin in 1984, 141 articles cited in MEDLINE between 1966 and 1992 have been retracted.
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