Hierarchy of Evidence: Where Observational Studies Fit in and Why We Need Them

Title
Hierarchy of Evidence: Where Observational Studies Fit in and Why We Need Them
Authors
Keywords
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Journal
JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME
Volume 91, Issue Suppl 3, Pages 2-9
Publisher
Ovid Technologies (Wolters Kluwer Health)
Online
2009-05-02
DOI
10.2106/jbjs.h.01571

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