CMAJ. 2005 Mar 1;172(5):661-5.

Tips for learners of evidence-based medicine: 4. Assessing heterogeneity of primary studies in systematic reviews and whether to combine their results.

Hatala R, Keitz S, Wyer P, Guyatt G; Evidence-Based Medicine Teaching Tips Working Group.

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Department of Medicine, University of British Columbia, Vancouver, BC.

PMID:: 15738493; [PubMed - indexed for MEDLINE]
PMCID:: PMC550638

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