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    PLoS Med. 2009 Sep;6(9):e1000151. Epub 2009 Sep 15.

    Grading quality of evidence and strength of recommendations: a perspective.

    Source

    Ottawa Methods Centre, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada. moansari@ohri.ca

    PMID:
    19753108
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2735783
    Free PMC Article

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