When should we change our clinical practice based on the results of a clinical study? The hierarchy of evidence
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KeywordsSystematic Review Pyramid Clinical Question Validation Cohort Prognostic Score
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The Authors declare that they have no conflict of interest.
Statement of human and animal rights
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with human and animals performed by any of the authors.
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