Atkins, D., Eccles, M., Flottorp, S., Guyatt, G. H., Henry, D., Hill, S., . . . Williams, J. W. (2004). Systems for grading the quality of evidence and the strength of recommendations I: Critical appraisal of existing approaches The GRADE Working Group. BioMed Central.
Chicago-tyylinen lähdeviittausAtkins, David, et al. Systems for Grading the Quality of Evidence and the Strength of Recommendations I: Critical Appraisal of Existing Approaches The GRADE Working Group. BioMed Central, 2004.
MLA-viiteAtkins, David, et al. Systems for Grading the Quality of Evidence and the Strength of Recommendations I: Critical Appraisal of Existing Approaches The GRADE Working Group. BioMed Central, 2004.
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